Selfadjoint boundary value problems for certain classes of differential- operator equations of higher order
M. L. Gorbachuk, A. N. Kochubei

This publication is cited in the following articles:

1. S. S. Mirzoev, M. Yu. Salimov, “On the Solvability of the Boundary-Value Problem for Second-Order Equations in Hilbert Space with an Operator Coefficient in the Boundary Condition”, Math. Notes, 91:6 (2012), 808–815