@incollection{Kholkin21,
author = {Aleksandr Kholkin},
title = {Spectral Properties of a Non-Self-Adjoint Differential Operator with Block-Triangular Operator Coefficients},
booktitle = {Recent Developments in the Solution of Nonlinear Differential Equations},
publisher = {IntechOpen},
address = {Rijeka},
year = {2021},
editor = {Bruno Carpentieri},
chapter = {3},
doi = {10.5772/intechopen.95820},
url = {https://doi.org/10.5772/intechopen.95820}
}