Pearman, Alan D. and Montero, Javier and Tejada Cazorla, Juan Antonio (1991) Fuzzy multicriteria techniques: an application to transport planning. In Uncertainty in Knowledge Bases. Lectures notes in computer science (521). Springer, Berlin, pp. 510-519. ISBN 3-540-54346-5
Pardo Llorente, Julio Ángel and Pardo Llorente, María del Carmen and Vicente, M.L. and Esteban, M.D. (1995) Informational energy test for equality of variances. In Advances in Intelligent Computing - IPMU '94. Lectures Notes in Computer Science (945). Springer, Berlín, pp. 241-247. ISBN 978-3-540-60116-6