TY JOUR TI Frequency-time analysis of underwater sounds of marine mammals. Toothed whales KW marine mammal sounds KW time-frequency analysis KW multipath propagation JO Russian Journal of Biological Physics and Chemisrty AU Lisyutin, V.A. AU Lastovenko, O.R. AU Degtyar, A.D. AU Yaroshenko, A.A. AU Petrenko, N.V. AU Luchin, V.L. AU Rybakova, K.A. AU Papkov, S.O. PY 2020 IS 5 PB Federal State Educational Institution of Higher Education Sevastopol State University