@article{IVM_2014_3_a1,
     author = {V. V. Malygina},
     title = {On positiveness of the fundamental solution to a~difference equation},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {19--32},
     publisher = {mathdoc},
     number = {3},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2014_3_a1/}
}