Unitary colligations and parametrization formulas
The aim of this paper is to describe, in a rather concise but relatively self-contained manner, some relations between unitary colligations which are regarded as linear systems, and parametrization formulas for the solutions of some interpolation problems.
English version (Springer): Ukrainian Mathematical Journal 46 (1994), no. 3, pp 151-158.
Citation Example: Unitary colligations and parametrization formulas // Ukr. Mat. Zh. - 1994. - 46, № 3. - pp. 147–154.