2D NMR and conformational analysis of a prototype anti-tumour steroidal ester - Kapou, A.; Fousteris, M.A.; Nikolaropoulos, S.S.; Zervou, M.; Grdadolnik, S.G.; Zoumpoulakis, P.; Kyrikou, I.; Mavromoustakos, T. (Journal of Pharmaceutical and Biomedical Analysis, 2005)