共 13 条
[1]
ATKINSON M, 1967, SHEET METAL IND MAR, P167
[2]
GOODWIN GM, 1968, METALL ITAL, P767
[3]
HECKER SS, 1972, 7 BIENN C INT DEEP D
[5]
KASPER AS, 1969, METAL PROGR OCT, P159
[6]
KEELER SP, 1968, MACHINERY FEB
[7]
KEELER SP, 1965, SH METAL IND, P683
[8]
PEARCE R, 1971, SHEET METAL IND, P943
[9]
ROGERS RW, 1971, METAL FORMING INTERR, P185