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- [2] ENVIRONMENTAL-PROTECTION AGENTS - 1ST ANNUAL-MEETING OF THE VEREIN-DEUTSCHER-INGENIEURE (VDI) ENVIRONMENTAL-ENGINEERING COORDINATING-OFFICE FOR AN EXCHANGE OF INFORMATION, 10-11 OCTOBER 1988, HAMBURG STAUB REINHALTUNG DER LUFT, 1989, 49 (02): : 71 - 72
- [3] APPLICATION-ORIENTED EDV-PROGRAMS FOR CALCULATING THE PROPAGATION OF NOISE IN THE OPEN AND IN FACTORY BUILDINGS ACCORDING TO VDI-2571, VDI-2714 AND VDI-2720 SHEET-1 SOUND TECHNOLOGY 89: PROGRESSIVE NOISE PROTECTION TECHNOLOGIES AND LOW NOISE PRODUCTS, 1989, 742 : 195 - 216