Uncertainty of measurement -- Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) -- Supplement 2: Extension to any number of output quantities— 84 стр.
Electroacoustics - Simulators of human head and ear - Part 4: Occluded-ear simulator for the measurement of earphones coupled to the ear by means of ear inserts— 38 стр.
Electroacoustics - Hearing aids - Part 8: Methods of measurement of performance characteristics of hearing aids under simulated [<i>in situ</i>] working conditions— 63 стр.