@article{ZNSL_2017_463_a15,
     author = {L. Yu. Kolotilina},
     title = {An upper bound for the largest eigenvalue of a~positive semidefinite block banded matrix},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {263--268},
     publisher = {mathdoc},
     volume = {463},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2017_463_a15/}
}