de Medeira, Cleber; Zani, Sérgio L. A class of globally non-solvable involutive systems on the torus. (English) Zbl 1417.58016 J. Pseudo-Differ. Oper. Appl. 10, No. 2, 455-474 (2019). MSC: 58J10 35A01 35N10 PDF BibTeX XML Cite \textit{C. de Medeira} and \textit{S. L. Zani}, J. Pseudo-Differ. Oper. Appl. 10, No. 2, 455--474 (2019; Zbl 1417.58016) Full Text: DOI
Bergamasco, Adalberto; Parmeggiani, Alberto; Zani, Sérgio; Zugliani, Giuliano Classes of globally solvable involutive systems. (English) Zbl 1382.58018 J. Pseudo-Differ. Oper. Appl. 8, No. 4, 551-583 (2017). Reviewer: Boris S. Kruglikov (Tromsø) MSC: 58J10 35A01 35N10 PDF BibTeX XML Cite \textit{A. Bergamasco} et al., J. Pseudo-Differ. Oper. Appl. 8, No. 4, 551--583 (2017; Zbl 1382.58018) Full Text: DOI