Fülöp Ferenc; Sillanpää Reijo; Dahlqvist Martti; Pihlaja Kalevi; Vainiotalo Pirjo: Ring-chain tautomerism and crystal structure of some 1,3-oxazacyclanes, and the electrophilic substituent constants for some heteroaryl groups in solution and in the gas-phase.
HETEROCYCLES, 37 (2). pp. 1093-1107. ISSN 0385-5414 (1994)