Castillo, Enrique, 1946- Functional equations in applied sciences / Enrique Castillo, Andres Iglesias, Reyes Ruiz-Cobo - Amsterdam : Elsevier, 2005 - xii, 390 p. ; 23 cm. - Mathematics in science and engineering ; v. 199 . ISBN: 044451788X (alk. paper) RM696.50 Subjects--Topical Terms: Functional equations