J. Blauert, U. Jekosch: Sound-quality evaluation-A multi-layered problem. Acta Acustica united with Acustica 85(5) (1997) 747-753.
C. Suied, P. Susini, S. McAdams: Evaluating warning sound urgency with reaction times. J. Exp. Psychol.-Appl 14(3) (2008) 201-212.
P. Susini, S. McAdams: Influence of sound-directed attentional focus on overall loudness ratings. Proc. EAA Congr., Sevilla (2002).
A. Minard, A. Billon, J.-J. Embrechts, B. Goujard, A. Sakout: Evaluation of the acoustic comfort of air-treatment systems: influence of factors related to room acoustics. Proc. Forum Acusticum 2011, Aalborg.
P. Legendre and L. Legendre: Numerical Ecology. Development in Environmental Modelling, Elsevier, Amsterdam, 2nd edition, 1998.