Effect of methylation on relative energies of tautomers and on the intramolecular proton transfer barriers of protonated nitrosamine: A MR-CISD study. - Railton Barbosa de Andrade; Ezequiel Fragoso Vieira Leitão; Miguel Angelo Fonseca de Souza; Elizete Ventura; Silmar Andrade do Monte (J. Comput. Chem., 2015)