PERIODIC-SOLUTIONS TO LINEAR-SYSTEMS WITH SMALL PARAMETER BY DERIVATIVE Статья ROZHKOV V.I. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Том 224. 1975. С. 1268-1271
SELECTIVE HYDROGENATION OF CYCLOPENTADIENE ON MEMBRANE CATALYSTS Статья SMIRNOV V.S., ERMILOVA M.M., KOKOREVA N.V., GRYAZNOV V.M. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Том 220. 1975. С. 647-650