Sohár Pál; Bernáth Gábor; Stájer Géza; Szabó Angéla E.: Structure of norbornene-fused 3,1-oxazine double cycloadducts. MAGNETIC RESONANCE IN CHEMISTRY, 27 (9). pp. 872-876. ISSN 0749-1581; 1097-458X (1989)