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- [2] MAXIMUM PRINCIPLE FOR CONTROL-SYSTEMS DESCRIBED BY DISTRIBUTION DIFFERENTIAL-EQUATIONS DOKLADY AKADEMII NAUK SSSR, 1986, 291 (03): : 560 - 562
- [8] ALGEBRAIC DIFFERENTIAL-EQUATIONS AND SYSTEMS POSSESSING HOLOMORPHIC SOLUTIONS DOKLADY AKADEMII NAUK SSSR, 1982, 262 (01): : 34 - 36