LOCAL AND GLOBAL ESTIMATES OF DERIVATIVES OF THE NONHOMOGENEOUS HYPOELLIPTIC EQUATION SOLUTIONS Статья Burenkov V.I., MAMAN K.R. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Том 294. 1987. С. 777-781
STUDY OF THE STATE OF OXYGEN DIFFUSING THROUGH THIN SILVER MEMBRANES INTO VACUUM Статья GRIAZNOV V.M., GULIANOVA S.G., KOLOSOV E.N., STARKOVSKII N.I. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Том 293. 1987. С. 872-875