共 16 条
[1]
BAUER B, COMMUNICATION
[5]
DUNN FL, IN PRESS ARCH OTOLAR
[6]
EINTHOVEN W, 1894, ARCH GES PHYSL, V57, P617
[7]
FLETCHER H, 1943, SPEECH HEARING, P140
[8]
The stethophone, an electrical stethoscope
[J].
BELL SYSTEM TECHNICAL JOURNAL,
1924, 3 (04)
:531-549
[9]
FROST J, 1949, ACTA MED SCANDINAV, V123, P268