PORETZKY, V.S, & N.W. ANISSIMOVA 1933 Materialen zur Oekologie der Diatomeen aus den Salzgewässern von Staraja Russa Issl. Ozer SSSR 2: 31-66, pls. IX, X Russian with German diagnoses and summary; author names transliterated into German as W.S. PORETZKY & N.W. ANISIMOWA