Progress, 1971
Buku Teks
Dudnikov, A.V., author
Prosveshchenie , 1970
Buku Teks
Ivanova, Vera Fedorovna, author
Leningradskogo Universiteta, 1962
Buku Referensi
Serafimovich, Aleksandr, author
Gosudarstvennoe izdatel'stvo khudozhestvennoj literatury, 1946
Buku Teks
Vinogradov, Viktor Vladimirovich, author
Nauka, 1977
Buku Referensi