共 50 条
- [31] ON A DUALITY PRINCIPLE FOR THE SELF-ADJOINT DIFFERENTIAL-EQUATION OF 2ND-ORDER BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 1995, 9B (03): : 617 - 632
- [33] ON THE 2ND-ORDER DIFFERENTIAL-EQUATION SATISFIED BY A CLASS OF SEMICLASSICAL ORTHOGONAL POLYNOMIALS COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE I-MATHEMATIQUE, 1987, 305 (05): : 163 - 166
- [40] STABILITY OF NONLINEAR-SYSTEMS DESCRIBED BY A 2ND-ORDER VECTOR DIFFERENTIAL-EQUATION IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS, 1988, 35 (06): : 703 - 711