Operators and Matrices · Volume 8, Issue 3 Green's function, resolvent, Parseval equality of differential operator with block-triangular matrix coefficients 08-32 Pages 601-622 DOI 10.7153/oam-08-32 Downloads Short PDF Full PDF PNG Authors A. M. Kholkin F. S. Rofe-Beketov Keywords spectrum block-triangular matrix coefficients Green's function Parseval equality Subject classes 34K11 47A10