共 50 条
- [3] LOWER BOUNDS FOR THE 1ST GAP OF EIGENVALUES IN THE SCHRODINGER OPERATOR ON SIMPLE RIEMANNIAN-MANIFOLDS CHINESE SCIENCE BULLETIN, 1990, 35 (12): : 1051 - 1052
- [8] ON THE ESTIMATE OF THE 1ST EIGENVALUE OF A COMPACT RIEMANNIAN MANIFOLD SCIENTIA SINICA SERIES A-MATHEMATICAL PHYSICAL ASTRONOMICAL & TECHNICAL SCIENCES, 1984, 27 (12): : 1265 - 1273
- [9] SYSTEMS OF THE 1ST ORDER DEFINED IN RIEMANNIAN MANIFOLDS DOKLADY AKADEMII NAUK SSSR, 1960, 130 (06): : 1183 - 1185