COMPARATIVE STABILITY OF DIMERIC AND MONOMERIC PIGMENTS EXTRACTED FROM SEA URCHIN STRONGYLOCENTROTUS DROEBACHIENSIS Article Shikov A.N., Ossipov V.I., Karonen M., Pozharitskaya O.N., Krishtopina A.S., Makarov V.G. Natural Product Research. Taylor and Francis Ltd.. Vol. 31. 2017. P. 1747-1751