TY - JOUR A1 - Christl, Manfred A1 - Braun, Max T1 - Photocycloadditionen des Benzvalens N2 - No abstract available KW - Organische Chemie Y1 - 1989 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-58492 ER -