共 16 条
[5]
HARGRAVE BT, 1975, VERH INT VEREIN LIMN, V19, P1073
[6]
KARL DM, 1982, EOS, V63, P138
[7]
KEPKAY PE, 1979, SCIENCE, V204, P68, DOI 10.1126/science.204.4388.68