共 5 条
[1]
COURANTHILBERT, 1943, METHODEN MATH PHYSIK, V1, P75
[3]
SCHELKUNOFF SA, 1942, Patent No. 2286839
[4]
Stone J. S., 1927, United States Patents, Patent No. [1,643,323, 1643323]
[5]
Stone J. S., 1929, Patent, Patent No. [US1715433 A, 1715433]