[1]
E. Haselbach, T. Belly, R. Gschwind, U. Klemm, and Z. Lanyiova, “Electronic and Molecular Structure of some Organic Radical Cations in Rigid Organic Systems”, Chimia, vol. 33, no. 11, p. 405, Nov. 1979, doi: 10.2533/chimia.1979.405.