Naseka, A. M., S. B. Tuniyev, and C. B. Renaud. “Lethenteron ninae, a New Nonparasitic Lamprey Species from the North-Eastern Black Sea Basin (Petromyzontiformes: Petromyzontidae)”. Zootaxa, vol. 2198, no. 1, Aug. 2009, pp. 16–26, doi:10.11646/zootaxa.2198.1.2.