HACETTEPE JOURNAL OF MATHEMATICS AND STATISTICS, vol.41, no.5, pp.675-688, 2012 (SCI-Expanded)
In the Hilbert space of vector-functions L-2(H, (a, b)), where H is any separable Hilbert space, the general representation in terms of boundary values of all normal extensions of the formally normal minimal operator, generated by linear differential-operator expressions of third order in the form