Camacho, A.I. (ed.) (1992): The Natural History of Biospeleology. Monografias del Museo Nacional de Ciencias Naturales, Madrid.
Camacho, A.I., Bello, E., Becerra, J.M., Vaticon, N. (1992): A natural history of the subterranean environment and its associated fauna. In: Camacho, A.I. (ed.): The Natural History of Biospeleology. Museo Nacional de Ciencias Naturles, Madrid: 172-197.
Camacho, A.I., Bello, E., Becerra, J.M., Vaticon, N. (1992):A natural history of the subterranean environment and its associated fauna. In: Camacho, A.I. (ed.): The Natural History of Biospeleology. Museo Nacional de Ciencias Naturles, Madrid: 172-197.