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- [3] PARTIAL-DIFFERENTIAL OPERATORS IN INFINITE DIMENSION - STUDY OF HYPOELLIPTICITY AND RESOLUBILITY IN CLASS OF HOLDERIAN FUNCTIONS AND DISTRIBUTION FOR ELLIPTIC PARTIAL-DIFFERENTIAL OPERATOR JOURNAL D ANALYSE MATHEMATIQUE, 1978, 33 : 39 - 104
- [5] DIFFERENTIAL-OPERATORS IN PARTIAL-DIFFERENTIAL EQUATIONS ANNALI DI MATEMATICA PURA ED APPLICATA, 1986, 143 : 155 - 185
- [6] DIFFERENTIAL OPERATORS FOR CERTAIN PARTIAL-DIFFERENTIAL EQUATIONS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1975, 22 (06): : A626 - A627