1. T. A. Aizatullin, V. L. Lebedev, and K. M. Khailov, Active Surfaces and Life (Gidrometeoizdat, Leningrad, 1979) [in Russian].
2. GOST (State Standard) 17.1.4.02–90: Water. Spectrophotometric Determination of Chlorophyll a (Izd. Standartov, Moscow, 1991) [in Russian].
3. Hydrometeorology and Hydrochemistry of the USSR Seas, Vol. 1: The Barents Sea, No. 2: Hydrometeorological Conditions and Oceanological Principles of Development of Biological Productivity, Ed. by F. S. Terziev (Gidrometeoizdat, St. Petersburg, 1992) [in Russian].
4. Ice maps of the Arctic Ocean. http://www.aari.ru/ o-data/_d0015.php. Cited October 10, 2020.
5. A. P. Zhichkin, “Peculiarities of interannual and seasonal variations of the Barents Sea ice coverage anomalies,” Russ. Meteorol. Hydrol. 40, 319–326 (2015).