共 4 条
[1]
Bruson H. A., 1946, U.S. Patent, Patent No. [2,395,453, 2395453]
[2]
HORST WPT, 1941, Patent No. 2234848
[3]
TRAUBE, 1899, BER, V32, P3156
[4]
TRAUBE, 1894, BER, V27, P279