共 7 条
[1]
BRODHUN E, 1902, Z INSTRUM KDE, V22, P364
[3]
GUMLICH E, 1895, WISSENSCHAFTLICHE AB, V2, P201
[4]
KORNDER F, 1960, LEITZ MITT WISS TECH, V4, P109
[5]
LIEBISCH T, 1919, BERL BER, P199
[6]
LOWRY TM, 1927, PHIL T ROYL SOC A, V226, P392
[7]
WENKING H, 1958, Z INSTRUMENTENKD, V66, P1