Obrist, M.K., Boesch, R. i Flückiger, P.F.: 'Variability in echolocation call design of 26 Swiss bat species: Consequences, limits and options for automated field identification with a synergic pattern recognition approach.' Mammalia., 68 (4): 307-32. Any 2004.
Parsons, S. i Jones, G.: 'Acoustic identification of twelve species of echolocating bat by discriminant function analysis and artificial neural networks.' J Exp Biol., 203: 2641-2656. Any 2000.