Pihlaja Kalevi; Lötjönen Lenita; Fülöp Ferenc; Bernáth Gábor; Vainiotalo Pirjo: Electron ionization mass spectra of some cyclohexane fused 2-N-phenyliminoperhydro-1,3-oxazines and related thiazines. In: Kolligátum. pp. 279-282. (1990)