共 17 条
- [1] ALMGREN FJ, 1966, ANN MATH, V85, P277
- [2] AMBROSE W, 1965, TOPOLOGY S2, V3, P199
- [4] De Giorgi E., 1960, SEM MAT SCUOLA NORM, P1
- [5] DEGIORGI E, 1965, ANN SCUOLA NORM SUP, V19, P79
- [7] EISENHART LP, 1949, INTRODUCTION DIFFERE
- [10] FLEMING WH, 1962, REND CIRC MAT PALERM, V2, P1