共 50 条
- [44] ULTRACONTRACTIVE HEAT KERNEL BOUNDS FOR SINGULAR 2ND-ORDER ELLIPTIC-OPERATORS JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES, 1993, 47 : 358 - 384
- [48] Lower bounds of Dirichlet eigenvalues for a class of higher order degenerate elliptic operators Journal of Pseudo-Differential Operators and Applications, 2019, 10 : 475 - 488
- [50] BOUNDS FOR EIGENVALUES OF 2ND-ORDER ELLIPTIC DIFFERENTIAL-OPERATORS ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK, 1991, 42 (06): : 848 - 863