Handbook of Differential Equations: Ordinary Differential Equations

RACHŮNKOVÁ, I., STANĚK, S., TVRDÝ, Milan. Singularities and Laplacians in Boundary Value Problems for Nonlinear Ordinary Differential Equations. In: CANADA, A., DRÁBEK, P., FONDA, A., eds. Handbook of Differential Equations: Ordinary Differential Equations. Amsterdam: Elsevier, 2006, s. 607-723. ISBN 0-444-52849-0.