Reduction of a canonical system of linear differential equations with periodic coefficients
English version (Springer): Ukrainian Mathematical Journal 29 (1977), no. 5, pp 485-489.
Citation Example: Karganyan I. R., Valeyev K. G. Reduction of a canonical system of linear differential equations with periodic coefficients // Ukr. Mat. Zh. - 1977. - 29, № 5. - pp. 637–642.
Full text