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Howard, David M. and Welch, Graham and Szymanski, J. (2002) Can listeners tell the difference between boys and girls singing the top line of cathedral music? In: 7th International Conference of Music Perception and Cognition, July 17-21, 2002, The University of New South Wales, Sydney.
Howard, David M. and Szymanski, J. and Welch, Graham (2002) Listener's Perception of English Cathedral Girl and Boy Choristers. Music Perception, 20 (1). pp. 35-49. ISSN 0730-7829