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1. On the analytic theory of a class
of singular partial differential equations, in *Analytic
Methods in Mathematical Physics*, Gordon and Breach, New
York, l970, 4l5-424.

2. New results on the approximation of
solutions to partial differential equations: iterative
methods, in *Analytic Theory of Differential Equations*,
Springer-Verlag Lecture Note Series, Vol. 183, 1971, 213-220
(with R. P. Gilbert).

3. New results on the approximation of
solutions to partial differential equations: the method of
particular solutions, in *Analytic Theory of Differential
Equations*, Springer-Verlag Lecture Note Series, Vol.
183, 1971, 207-212 (with R. P. Gilbert).

4. On the numerical treatment of
partial differential equations by function theoretic methods,
in *Numerical Solution of Partial Differential Equations -
II*, Academic Press, New York, l97l, 273-326 (with R. P.
Gilbert).

5. Cauchy's problem and the analytic
continuation of solutions to elliptic equations, in *Proceedings
of
the
Symposium
on
Non-Well Posed Problems and Logarithmic Convexity*,
Springer-Verlag Lecture Note Series, Vol. 316, 1973, 55-66.

6. The inverse Stefan problem, *Berichte
der
Gesellschaft fur Mathematik und Datenverarbeitung mbH Bonn*,
**77** (1973), 29-41.

7. Integral operators for parabolic
equations and their application, in *Constructive and
Computational Methods for Differential and Integral
Equations*, Springer-Verlag Lecture Note Series, Vol 430,
1974, 95-111.

8. Walsh's theorem for the heat
equation, in *Proceedings of the Conference on Ordinary and
Partial Differential Equations*, Springer-Verlag Lecture
Note Series, Vol. 564, l976, 54-60.

9. Integral operators and inverse
problems in scattering theory, in *Proceedings of the
Symposium on Function Theoretic Methods for Partial
Differential Equations*, Springer-Verlag, Lecture Note
Series, Vol. 561, 1976, 17-28.

10. Transformation operators and wave
propagation in a spherically stratified medium, in *Differential
Equations and Applications*, North-Holland Mathematics
Studies, Vol. 31, 1978, 181-187.

11. The approximation of solutions to
the backwards heat equation by solutions of pseudoparabolic
equations, in *Inverse and Improperly Posed Problems in
Differential Equations*, Akademie- Verlag, Berlin 1979,
59-71.

12. Continuation and reflection of
solutions to parabolic partial differential equations, in *Proceedings
of
the
Conference
on
Ordinary and Partial Differential Equations*,
Springer-Verlag Lecture Note Series, Vol. 827, 1980, 54-82.

13. Analytic continuation of solutions
to partial differential equations with applications to
problems in scattering theory, in *Complex Analysis:
Methods, Trends, and Applications*, Akademie-Verlag,
Berlin, 1983, 238-248.

14. The inverse scattering problem for
acoustic waves, in *Proceedings of the Conference on
Ordinary and Partial Differential Equations*,
Springer-Verlag Lecture Note Series, Vol. 964, 1982, 143-161.

15. Analytic and numerical methods in
the study of the inverse scattering problem for acoustic
waves, in *Improperly Posed Problems and Their Numerical
Treatment*, Birkhauser-Verlag International Series of
Numerical Mathematics, Vol. 63, 1983, 47-55 (with A. Kirsch).

16. A numerical method for solving the
inverse Stefan problem in two space variables, in *Improperly
Posed Problems and Their Numerical Treatment*,
Birkhauser-Verlag International Series of Numerical
Mathematics, Vol. 63, 1983, 57-63 (with R. Reemtsen).

17. Two methods for solving the inverse scattering problem for
time- harmonic acoustic waves, in *Constructive Methodsfor
the Practical Treatment of Integral Equations*,
Birkhauser-Verlag International Series of Numerical
Mathematics, Vol. 73, 1985, 103-109.

18. Dense sets and far field patterns
for the transmission problem, in *Classical Scattering*,
Shiva Publishing, 1984, 45-54 (with A. Kirsch).

19. Uniqueness of solutions to the
inverse acoustic scattering problem, in *Classical
Scattering*, Shiva Publishing, 1984, 55-60 (with B. D.
Sleeman).

20. Interior eigenvalues and the
inverse scattering problem for electromagnetic waves, in *Problems
of
Applied Analysis*, Verlag Peter Lang, 1987, 76-86.

21. A new method for solving the
inverse scattering problem, in *Ordinary and Partial
Differential Equations*, Longman Publishing, 1987, 37-51.

22. Projection theorems for far field
patterns and the inverse scattering problem, in *Inverse
and Ill-Posed Problems*, Academic Press, 1987, 261-277
(with P. Monk).

23. Inverse problems in scattering
theory, in *Oakland Conference on Partial Differential
Equations and Applied Mathematics*, Longman Publishing,
1987, 39-73 (with P. Monk and F. Santosa).

24. Optimal methods for determining
the shape of an obstacle, in *Theory and Applications of
Inverse Problems*, Longman Publishing, 1988, 1-7.

25. The inverse scattering problem for
time harmonic electromagnetic waves, in *Integral
Equations and Inverse Problems*, Longman Publishing,
1991, 58-69 (with P. Monk).

26. The inverse scattering problem for
acoustic waves in an inhomogeneous medium, in *Inverse
Problems in Partial Differential Equations*, SIAM
Publications, 1990, 73-84.

27. The inverse scattering problem for
electromagnetic waves in an inhomogeneous medium, in *Direct
and Inverse Boundary Value Problems*, Verlag Peter Lang,
1991, 27-35.

28. The inverse scattering problem for
electromagnetic waves, in *Inverse Problems in Scattering
and Imaging*, IOP Publishing, 1992, 59-70.

29. Target signatures for Maxwell's
equations, in *Inverse Problems in Mathematical Physics*,
Springer-Verlag Lecture Notes in Physics, Vol. 422, 1993,
22-28.

30. The monitoring of human or animal
bone marrow by electromagnetic waves, in *Inverse Problems:
Principles and Applications in Geophysics, Technology and
Medicine*, Akademie Verlag, 1993, 100-110.

31. Spectral theory of the magnetic
far field operator in an orthotropic medium, in *Nonlinear
Problems
in Applied Mathematics*, T. S. Angell, et. al., editors,
SIAM Publications, Philadelphia, 1995, 96-103 (with C. Erbe).

32. A survey of selected topics in
inverse electromagnetic scattering theory, in *Inverse
Problems in Wave Propagation*, Springer-Verlag, 1997,
105-127.

33. Qualitative methods in inverse
scattering theory, in *Inverse Problems in Medical Imaging
and Nondestructive Testing*, Springer -Verlag, 1997,
36-42.

34. A brief introduction to inverse
scattering theory, in *Integral Methods in Science and
Engineering*, Longman Publishing, 1997, 3-8.

35. A linear method for solving
inverse scattering problems in the resonance region, in *Inverse
Problems
of Wave Propagation and Diffraction*, Springer-Verlag,
1997, 86-92.

36. The inverse scattering problem for
an orthotropic medium, in *Modern Mathematical Methods in
Diffraction Theory and its Applications in Engineering*,
Verlag Peter Lang, 1997, 31-39 .

37. Mathematical problems in microwave
medical imaging, in *Computational Radiology and Imaging:
Therapy and Diagnostics*, Springer-Verlag, 1999, 137-156
(with P. Monk).

38. A simple method for solving
electromagnetic inverse scattering problems, in *Mathematical
Methods
in Scattering Theory and Biomedical Technology*, Longman
Publishing, 1998, 3-11.

39. Recent progress on the inverse
electromagnetic scattering problem for anisotropic media, in *Mathematical
and Numerical Aspects of Wave Propagation*, SIAM
Publications, 1998, 22-33.

40. The linear sampling method in
inverse scattering theory, in *Surveys on Solution Methods
for Inverse Problems*, Springer-Verlag, 2000, 107-118
(with A. Kirsch and P. Monk).

41. Critical values in inverse scattering theory, in *Analytical
and Computational Methods in Scattering and Applied
Mathematics*, Chapman and Hall, 2000, 57-65.

42. Inverse acoustic and
electromagnetic scattering theory, in *Inside Out*,
Cambridge University Press*, *2003, 67-110.

43. Herglotz wave functions in inverse
electromagnetic scattering theory, in *Topics in
Computational Wave Propagation*, Springer Verlag*,*
2003, 367-394 (with P. Monk).

44. Mixed
boundary
value
problems
in
inverse electromagnetic scattering, in Advances in Scattering and
Biomedical Engineering, World Scientific
Publishing, 2004, 60-70 (with
F. Cakoni).

45. Remarks on the
inverse scattering problem for acoustic waves, in *New
Analytic and Geometric Methods in Inverse Problems, *Springer
Verlag, 2004, 283-289.

46. Target identification of partially coated objects using
electromagnetic waves, in Mathematical
Methods
in
Scattering
Theory and Biomedical Engineering, World Scientific
Publishing, 2006, 104-111.

47. The inverse scattering
problem for anisotropic media, in Mathematical Methods in Scattering
Theory and Biomedical Engineering, World Scientific
Publishing 2008, 21-31 (with F. Cakoni).

48. The transmission eigenvalue problem , in Mathematical Methods in Scattering
Theory and Biomedical Engineering, World Scientific
Publishing 2010, 368-379 (with F. Cakoni and D.
Gintides).

49. Inverse scattering, in Handbook
of
Mathematical Methods in Imagining, Springer
Verlag, 2010, 552-598 (with R. Kress).

50. Thirty years and still counting, Inverse problems and Imaging, 3: 2009, 151-153 (with R. Kress).

51. Inverse problems and imaging: past, present and
future, UNESCO-EOLSS (on-line), 2012 (with F. Cakoni).

52. Interior transmission eigenvalues for anisotropic
media, in Integral
Methods in Science and Engineering, to appear (with A
Kleefeld)