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3. J. A. Macadam, “The Measurement of Sound Power Radiated by Individual Room Surfaces in Lightweight Buildings,” Building Research Establishment Current Paper 33174, (1974).
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5. T. H. Hodgson, “Investigation of the Surface Intensity Method for Determining the Noise Sound Power of a Large Machine in Situ,” J. Acoust. Soc. Am., Vol 61, 2, (1977), pp. 487–493.