共 8 条
[1]
COLLINS GJ, 1972, IEEE J QUANTUM ELECT, VQE 8, P679
[5]
PIPER JA, 1972, APPL PHYS LETT, V21, P203, DOI 10.1063/1.1654344
[8]
SILFVAST WT, 1971, APPL PHYS LETT, V18, P482