(1)
Vortsepneva, E. V.; Zhadan, A. E.; Tzetlin, A. B. Spermiogenesis and Sperm Ultrastructure of Asetocalamyzas Laonicola Tzetlin, 1985 (Polychaeta), an Ectoparasite of the Large Spionid Scolelepis Cf. Matsugae Sikorsfi, 1994, from the White Sea. Sci. mar. 2006, 70, 343-350.