共 10 条
[4]
Kneser A, 1896, J REINE ANGEW MATH, V116, P178
[5]
LEIGHTON W, 1936, T AM MATH SOC, V40, P252
[6]
MORSE M, 1954, CALCULUS VARIATIONS
[8]
STERNBERG RL, 1952, J MATH PHYS, V31, P244
[10]
[No title captured]