TY - JOUR A1 - Gigstad, Kenneth M. A1 - Ricci JR., John S. A1 - Markgraf, J. Hodge A1 - Christl, Manfred A1 - Kraft, Arno T1 - Strained Heterocyclic Systems : 18. Structure of 1,2,3-Methylidyne-2,3-dihydro-1H-cyclopenta[b]quinoxaline N2 - No abstract available Y1 - 1991 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-41645 SN - 0108-2701 ER - TY - JOUR A1 - Christl, Manfred A1 - Krimm, Stefan A1 - Kraft, Arno T1 - Some Valenes of Benzannelated Five-Membered Heteroarenes - Synthesis and NMR Spectra N2 - No abstract available Y1 - 1990 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-30026 ER - TY - JOUR A1 - Christl, Manfred A1 - Krimm, Stefan A1 - Kraft, Arno T1 - Einige Valene von benzanellierten fünfgliedrigen Heteroarenen - Synthesen und NMR-Spektren N2 - No abstract available Y1 - 1990 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-31559 ER -