1. Abe, M., Yamatodani, S., Yamano, T., Kozu, Y., Yamada, S.: Production of alkaloids and related substances by fungi. Part I. Examination of filamentous fungi for their ability of producing ergot alkaloids. J. Agric. Chem. Soc. Jpn. 41, 68–71 (1967)
2. Abe, M., Ohmomo, S., Ohashi, T., Tabuchi, T.: Isolation of chanoclavine-I and two new interconvertible alkaloids, rugulo-vasine A and B, from the culture of Penicillium concavo-rugulosum. Agric. Biol. Chem. (Tokyo) 33, 469–471 (1969)
3. Abou-Chaar, C.I., Günther, H.F., Manuel, M.F., Robbers, J.E., Floss, H.G.: Biosynthesis of ergot alkaloids. Incorporation of (5R)- and (5S)-mevalonate-5-T into chanoclavines and tetracyclic ergolines. Lloydia 35, 272–279 (1972)
4. Agurell, S.: Costaclavine from Pénicillium chermesinum. Experientia 20, 25–26 (1964)
5. Agurell, S.: Biosynthetic studies on ergot alkaloids and related indoles. Acta Pharm. Suec. 3, 71–100 (1966)