For citations:

Yusupov R.R., Semenov Yu.K. Maturation of flounder species in the northern part of the Sea of Okhotsk in 1997–2019. The researches of the aquatic biological resources of Kamchatka and the North-West Part of the Pacific Ocean. 2023;(68):90-111. (In Russ.) https://doi.org/10.15853/2072-8212.2023.68.90-111