George P. Ford P. S. Herman Jon W. Thompson Syn and anti aryl nitrenium ions. 231-243 1999 20 Journal of Computational Chemistry 2 http://dx.doi.org/10.1002/(SICI)1096-987X(19990130)20:2<231::AID-JCC5>3.0.CO;2-N db/journals/jcc/jcc20.html#FordHT99