Petrushevskaya 1967Petrushevskaya, M. G. 1967. Radiolarians of Orders Spumellaria and Nassellaria of the Antarctic Region (from Material of the Soviet Antarctic Expedition), In: "Studies of Marine Fauna IV(XII) : Biological Reports of the Soviet Antarctic Expedition (1955-1958)", Andriyashev, A. P. and Ushakov, P. V. (eds.), Academy of Sciences of the USSR, Zoological Institute, Leningrad (translated from Russian and published by Israel Program for Scientific Translations ), vol. 3: 2-186.
Acknowledgment to Erik Anthonissen for scanning the drawings and OCR'ing/proofreading the text.