Vortsepneva, E. V., Zhadan, A. E., & Tzetlin, A. B. (2006). 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. Scientia Marina, 70(S3), 343–350. https://doi.org/10.3989/scimar.2006.70s3343