Ecological relations and temporal changes in the pelagial of the high mountain lakes in the Rila Mountains (Bulgaria)

by Teodora TRICHKOVA, Dobrina TEMNISKOVA-TOPALOVA, Maya STOYNEVA, Galerida RAIKOVA-PETROVA, Wesselin NAIDENOW†, Milena HRISTOZOVA, Ivan BOTEV, Roumen KALCHEV
Published 2004-02-01