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- [1] TESTING COMPLIANCE WITH THRESHOLD LIMIT VALUES FOR RESPIRABLE DUSTS AMERICAN INDUSTRIAL HYGIENE ASSOCIATION JOURNAL, 1967, 28 (06): : 543 - +
- [2] NERVE EXCITABILITY TESTING - TECHNICAL PITFALLS AND THRESHOLD NORMS USING ABSOLUTE VALUES LARYNGOSCOPE, 1993, 103 (04): : 379 - 385