Kalajda, O. F.; Moroz, Ī. P. Some classes of integrable systems of linear equations. (Ukrainian) Zbl 0900.34012 Vīsn. Kiïv. Unīv., Mat. Mekh. 32, 44-52 (1990). MSC: 34A30 34A05 PDF BibTeX XML Cite \textit{O. F. Kalajda} and \textit{Ī. P. Moroz}, Visn. Kyïv. Univ., Mat. Mekh. 32, 44--52 (1990; Zbl 0900.34012)
Kalajda, O. F.; Shevchenko, A. B.; Shevchenko, M. B. Some problems of the theory of linear differential equations. (Ukrainian) Zbl 0900.34003 Vīsn. Kiïv. Unīv., Mat. Mekh. 29, 22-30 (1987). MSC: 34A05 34A30 PDF BibTeX XML Cite \textit{O. F. Kalajda} et al., Visn. Kyïv. Univ., Mat. Mekh. 29, 22--30 (1987; Zbl 0900.34003)
Kalajda, O. F.; Yudenko, G. P. Matrix methods for solving initial value problems for equations with delays. (Ukrainian) Zbl 0900.65217 Vīsn. Kiïv. Unīv., Mat. Mekh. 28, 43-47 (1986). MSC: 65L05 PDF BibTeX XML Cite \textit{O. F. Kalajda} and \textit{G. P. Yudenko}, Visn. Kyïv. Univ., Mat. Mekh. 28, 43--47 (1986; Zbl 0900.65217)
Kalajda, O. F.; Izbasarov, B. A variant of the matrix method for solution of a two-dimensional spectral problem for second-order operators of elliptic type. (Ukrainian) Zbl 0900.65324 Vīsn. Kiïv. Unīv., Mat. Mekh. 26, 65-68 (1984). MSC: 65N35 PDF BibTeX XML Cite \textit{O. F. Kalajda} and \textit{B. Izbasarov}, Visn. Kyïv. Univ., Mat. Mekh. 26, 65--68 (1984; Zbl 0900.65324)