1. Fern constituents: dryocrassol and dryocrassyl acetate isolated from the leaves of aspidiaceous fern;Ageta;Tetrahedron Lett.,1975
2. Triterpene alcohol isolation from oil shale;Albrecht;Science,1969
3. Organic geochemical studies of Solar Lake laminated cyanobacterial sediments;Boon,1983
4. Steroids and triterpenoids in deep sea sediments as environmental and diagenetic indicators;Brassell,1983
5. Alcools aliphatiques et polycycliques dans les sediments alcools derives du hopane et du 3-methyl hopane;Dastillung;J. Chem. Res.,1980