%0 Book %A Luckenbach, R. %E Luckenbach, R. %I Springer %D 1990 %C Berlin %G englisch %B Beilstein handbook of organic chemistry ; %@ 3540523545 %@ 9783540523543 %@ 0387523545 %@ 9780387523545 %T Beilstein handbook of organic chemistry. 5th supplementary series, vol. 22, pt. 3 : covering the literature from 1960 - 1979. %7 4. ed. %X Heterocyclic compounds: