3 citations to https://www.mathnet.ru/eng/dan30171
  1. B. R. Vainberg, “On the short wave asymptotic behaviour of solutions of stationary problems and the asymptotic behaviour as $t\to\infty$ of solutions of non-stationary problems”, Russian Math. Surveys, 30:2 (1975), 1–58  mathnet  crossref  mathscinet  zmath
  2. D. M. Èidus, “The principle of limit amplitude”, Russian Math. Surveys, 24:3 (1969), 97–167  mathnet  crossref  mathscinet  zmath
  3. B. R. Vainberg, “Behavior of the solution of the Cauchy problem for a hyperbolic equation $t\to\infty$”, Math. USSR-Sb., 7:4 (1969), 533–567  mathnet  crossref  mathscinet  zmath