Kopal, Zdenėk 1914 Numerical analysis, with emphasis on the application of numerical techniques to problems of infinitesimal calculus in single variable - London : Chapman and Hall Ld., 1955. - xiv, 556 p. ; 25 cm. Notas bibliogrįficas al pie de pįgina Subjects--Topical Terms: CALCULO NUMERICO Universal Decimal Class. No.: 517