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- [7] TRACES OF PSEUDODIFFERENTIAL-OPERATORS IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII MATEMATIKA, 1982, (12): : 30 - 38
- [10] PSEUDODIFFERENTIAL-OPERATORS AND THEIR INVERSION DOKLADY AKADEMII NAUK SSSR, 1984, 276 (03): : 567 - 570