共 50 条
- [41] 2ND ORDER OSCILLATIONS IN PARAMETRIC SCATTERING SPECTRA OF LITHIUM FORMIATE [J]. FIZIKA TVERDOGO TELA, 1981, 23 (06): : 1842 - 1844
- [43] ELLIPTICAL SYSTEMS OF 2ND ORDER PARTIAL DIFFERENTIAL EQUATIONS [J]. DOKLADY AKADEMII NAUK SSSR, 1957, 112 (06): : 983 - 986
- [47] 2ND ORDER LINEAR EVOLUTION EQUATIONS AND MULTISTEP METHODS [J]. RAIRO-ANALYSE NUMERIQUE-NUMERICAL ANALYSIS, 1979, 13 (04): : 329 - 353
- [49] STRONG COMPARISON THEOREMS FOR ELLIPTIC EQUATIONS OF 2ND ORDER [J]. JOURNAL OF MATHEMATICS AND MECHANICS, 1961, 10 (03): : 431 - 440