New steroidal saponins from the sponge Erylus lendenfeldi - Fouad, Mostafa; Al-Trabeen, Khaled; Badran, Mohammad; Wray, Victor; Edrada, RuAngelie; Proksch, Peter; Ebel, Rainer (ARKIVOC, 2004)
doi: 10.3998/ark.5550190.0005.d03