1. Secondary metabolites from echinoderms as chemotaxonomic markers;Stonik,1988
2. Homological variability and the trend of evolution of triterpene glycosides in Holothurioidea;Kalinin;Zh Obshch Biol,1990
3. Echinoderm saponins;Burnell,1983
4. Sterols: their structure and distribution;Bergmann,1962
5. Echinoderm sterols;Gupta;Tetrahedron,1968