Literature
- Zaryanova, E. B. 1954. Morphologitcheskaya kharacteristica osetra (Acipenser güldenstädti Brandt) i sevryugi (Acipenser stellatus Pallas) na rannikh stadyakh razvitya. Trudy saratov. Otd. Casp. fil. VNIRO, 3: 294355, fig. 1-21 (in russian).