共 50 条
- [41] REGULAR POINTS, SPECTRUM AND EIGENFUNCTIONS OF LINEAR OPERATORS DOKLADY AKADEMII NAUK SSSR, 1969, 188 (02): : 274 - &
- [42] ON THE NUMBER OF CRITICAL POINTS OF SOLUTIONS OF SEMILINEAR ELLIPTIC EQUATIONS ELECTRONIC RESEARCH ARCHIVE, 2021, 29 (06): : 4215 - 4228
- [48] A relation between the positive and negative spectra of elliptic operators Letters in Mathematical Physics, 2017, 107 : 1799 - 1807