@inbook{c6a2e911406940c2aea54170fb797e8b,
title = "Sojourn times, singularities of the scattering kernel and inverse problems",
author = "V. Petkov and Luchezar Stoyanov",
year = "2003",
language = "English",
isbn = "0521824699",
volume = "47",
series = "Mathematical Sciences Research Institute Publications",
publisher = "Cambridge University Press",
pages = "297--332",
editor = "Gunther Uhlmann",
booktitle = "Inside Out: Inverse problems and Applications",
address = "United Kingdom",
edition = "47",
}