Vesselin Petkov, Professor Emeritus, IMB, Unversité de Bordeaux, France. Luchezar Stoyanov, Professor, School of Mathematics and Statistics, University of Western Australia.
Thus, while solving the usual inverse problems is the rst main concern, a second one is the study of generic properties, supported by the bumpy surfaces theorem. Understanding scattering and sojourn times is the third main topic, and the fourth is obtaining inverse scattering results. The material added for this edition focuses on the latter two Boris Hasselblatt on behalf of Mathematical Reviews, October 2017