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Engel, P.S.; Gerth, D.B.; Keys, D.E.; Scholz, J.N.; Houk, K.N.; Rozeboom, M.D.; Eaton, T.A.; Glass, R.S.; Broeker, J.L., Ionization potentials of some azoalkanes by photoelectron spectroscopy, Tetrahedron, 1988, 44, 6811. [all data]