@PHDTHESIS{isaev2013, url = " http://www.theses.fr/2013EPXX0073", title = "Stability and instability in inverse problems", author = "Isaev, Mikhail", year = "2013", pages = "1 vol. (179 p.)", note = "Thèse de doctorat dirigée par Novikov, Roman Mathématiques appliquées Palaiseau, Ecole polytechnique 2013", note = "2013EPXX0073", }