共 10 条
- [1] CREMER L, 1953, ACUSTICA, V3, P317
- [2] GOSELE K, UNPUBLISHED
- [3] GOSELE K, 1959, 3 P ICAC STUTTG, V2, P989
- [4] HECKL M, 1958, ACUSTICA, V8, P212
- [5] Heckl M., 1960, ACTA ACUST UNITED AC, V10, P109
- [6] MEYER E, 1951, ACUSTICA, V1, P17
- [7] REIHER H, 1960, SCHALLSCHUTZ BAUTEIL, P117
- [8] WESTPHAL W, 1957, ACUSTICA, V7, P335
- [9] 1960, DIN52210
- [10] 1960, R140 ISOREC