Celia, Michael A. Numerical methods for differential equations fundamental concepts for scientific and engineering applications Michael A. Celia, William G. Gray. - Englewood Cliffs, N.J. Prentice-Hall 1992. - 436 p. ; 24 cm. p. 426-430. ISBN: 0136269613 Subjects--Topical Terms: Differential equations--Numerical solutions.Differential equations, Partial--Numerical solutions.