共 27 条
[21]
PETROV AD, 1959, DOKL AKAD NAUK SSSR+, V126, P1009
[22]
PETROV AD, 1959, DOKL AKAD NAUK USSR, V123, P960
[25]
TSUJI J, 1970, Patent No. 1942798
[27]
1961, Patent No. 869343