Watson, G. A. Approximation theory and numerical methods - New York : Wiley, 1980 - 229 p. - Wiley - Interscience publication . - Wiley - Interscience publication . LCCN: 53176 Subjects--Topical Terms: Análisis numérico.Aproximacion, teoria de la. Dewey Class. No.: 519.7 / W3