@inproceedings{inproceedings97146caa, title = {Mesoionic compounds: methylation of 1,3 - diphenyl-2 [4-chloro-3-nitrophenil] - 1,3,4 - trizolium - 5 - thiolate}, author = {Echevannia, A and Miller, J}, year = {1987}, booktitle = {Conferencia de Fisico-Quimica Organica} }