共 40 条
- [1] Akhtyamova A. A., 2012, FUND MATH ITS APPL N, V1, P19
- [6] Aliyev ZS, 2014, AZERBAIJAN J MATH, V4, P108
- [7] Basis properties of a fourth order differential operator with spectral parameter in the boundary condition [J]. CENTRAL EUROPEAN JOURNAL OF MATHEMATICS, 2010, 8 (02): : 378 - 388