Linear system of differential equations with turning point
A system of linear differential equations with small parameter as a coefficient of a part of derivatives is reduced to the canonical form and the properties of the transformation matrix are investigated.
English version (Springer): Ukrainian Mathematical Journal 62 (2010), no. 5, pp 716-738.
Citation Example: Klyuchnyk I. H. Linear system of differential equations with turning point // Ukr. Mat. Zh. - 2010. - 62, № 5. - pp. 625–642.