共 5 条
[1]
Penrose R., 1959, P CAMB PHILOS SOC, V55, P137
[3]
Weinstein R., 1960, AM J PHYS, V28, P607, DOI [10.1119/1.1935916, DOI 10.1119/1.1935916]
[5]
WEISSKOPF VF, 1960, SCI AMERICAN, V203, P74