Geometric asymptotics for nonlinear PDE by Maslov, Viktor Pavlovitch, Omel'yanov, Georgi Alexandrovich fromTranslations of mathematical monographs 0 Type: Book
Semi-classical approximation in quantum mechanics by Maslov, Viktor Pavlovitch, Fedoryuk, Mikhail Vasilévich, Niederle, J., Tolar, J. fromMathematical physics and applied mathematics 0 Type: Book