International Conference "Lavrentyev Readings on Mathematics, Mechanics, and Physics" (3rd 1990 Novosibirsk, R.S.F.S.R.)

• Tretʹi͡a︡ Mezhdunarodnai͡a︡ konferent͡s︡ii͡a︡ "Lavrentʹevskie chtenii͡a︡ po matematike, mekhanike i fizike," 10-14 senti͡a︡bri͡a︡ 1990 g., Novosibirsk, SSSR