On generalized a priori estimates for quasi-elliptic differential operators
Referera så här
Purmonen, V. T. (1979). On generalized a priori estimates for quasi-elliptic differential operators. Annales Fennici Mathematici, 4(2), 227–252. https://doi.org/10.5186/aasfm.1978-79.0420
Copyright (c) 1979 The Finnish Mathematical Society
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