HOPFS CLASSIFICATION THEOREM IN THEORY OF SHAPES Статья LISITSA Y.T. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Том 223. 1975. С. 1056-1059
NEW VARIANT OF SEXUAL FACTOR F IN ESCHERICHIA-COLI Статья PEKHOV A.P., SHCHIPKOV V.P., BUYANOVA N.I. Doklady Akademii nauk SSSR. Mezhdunarodnaya Kniga, Moscow, Russian Federation. Том 220. 1975. С. 711-714