@article{TVIM_2018_4_a4,
     author = {V. S. Rykhlov},
     title = {On multiple completeness of the root functions of the nonregular pencils of differential operators with constant coefficients and splitting boundary conditions},
     journal = {Taurida Journal of Computer Science Theory and Mathematics},
     pages = {90--112},
     publisher = {mathdoc},
     number = {4},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TVIM_2018_4_a4/}
}