@article{article17106a0a,
title   = {Classes of globally solvable involutive systems},
author = {Bergamasco, Adalberto Panobianco and Parmeggiani, Alberto and Zani, Sérgio Luís and Zugliani, Giuliano Angelo},
year = {2017},
doi = {10.1007/s11868-017-0217-9},
journal   = {Journal of Pseudo-Differential Operators and Applications}
}