@article{IVM_2009_6_a5,
     author = {V. S. Rykhlov},
     title = {Completeness of eigenfunctions of one class of pencils of differential operators with constant coefficients},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {42--53},
     publisher = {mathdoc},
     number = {6},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2009_6_a5/}
}