@article{RSMUP_1991__86__111_0, author = {Colombini, Ferruccio and Del Santo, Daniele}, title = {Some uniqueness results for degenerate elliptic operators in two variables}, journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova}, volume = {86}, year = {1991}, pages = {111-129}, mrnumber = {1154102}, zbl = {0766.35005}, language = {en}, url = {http://dml.mathdoc.fr/item/RSMUP_1991__86__111_0} }
Colombini, Ferruccio; Del Santo, Daniele. Some uniqueness results for degenerate elliptic operators in two variables. Rendiconti del Seminario Matematico della Università di Padova, Tome 86 (1991) pp. 111-129. http://gdmltest.u-ga.fr/item/RSMUP_1991__86__111_0/
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