共 50 条
- [33] A CLASS OF 2ND-ORDER INTEGRATORS AND LOW-PASS DIFFERENTIATORS IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-FUNDAMENTAL THEORY AND APPLICATIONS, 1995, 42 (04): : 220 - 223
- [38] COERCIVE ESTIMATES AND SEPARATION FOR THE 2ND-ORDER ELLIPTICAL DIFFERENTIAL-EQUATIONS DOKLADY AKADEMII NAUK SSSR, 1988, 301 (05): : 1034 - 1036
- [40] CARLEMAN ESTIMATES AND INVERSE PROBLEMS FOR 2ND-ORDER HYPERBOLIC-EQUATIONS MATHEMATICS OF THE USSR-SBORNIK, 1986, 130 (1-2): : 267 - 277