Reinvestigation of the formaldehyde?aniline condensation. Part 4. Ultraviolet photoelectron and electron transmission spectra of N-methyleneaniline and its symmetric dimethyl ring-substituted homologues and semiempirical theoretical evaluationsDistefano, Giuseppe; Giumanini, Angelo G.; Modelli, Alberto; Poggi, Gabriella · Journal of the Chemical Society, Perkin Transactions 2 · 1985