An example of the absence of a global solution to some inverse problem for a hyperbolic equation. Romanov, V. G. — 2003 Sibirskij Matematicheskij Zhurnal
A stability estimate for a solution to a two-dimensional inverse problem of electrodynamics. Romanov, V. G. — 2003 Sibirskij Matematicheskij Zhurnal
About Sergej L'vovich Sobolev. Lavrent'ev, M. M.; Ershov, Yu. L.; Kutateladze, S. S.; Borovkov, A. A.; Godunov, S. K.; Goncharov, S. S.; Reshetnyak, Yu. G.; Romanov, V. G.; Mazurov, V. D. — 2003 Sibirskij Matematicheskij Zhurnal