共 9 条
[1]
COLLINS JH, 1977 IEEE ULTR S P, P541
[4]
KOIKE T, 1987 IEEE ULTR S P, P221
[5]
OWENS JH, 1978 IEEE ULTR S P, P684
[6]
OWENS JM, 1980 IEEE ULTR S P, P538