Transformation of linear non-homogeneous differential equations of the second order to homogeneous. - Miloje Rajovic; Rade Stojiljkovic; Dragan Dimitrovski (Comput. Math. Appl., 2009)

Perturbation of solutions of ordinary linear homogeneous differential equations of the second order. - Miloje Rajovic; Rade Stojiljkovic; Dragan Dimitrovski; Dragana Radosavljevic (Comput. Math. Appl., 2011)