Increase of accuracy in machine computation of some differential equations having variable coefficients and of some nonlinear differential equations Karel Beneš (1982) Sborník prací Přírodovědecké fakulty University Palackého v Olomouci. Matematika
Initial-value methods for computing eigenvalues of two point boundary value problem Ravi P. Agarwal, Y. M. Chow (1987) Archivum Mathematicum