@article{MZM_2005_77_4_a1,
     author = {V. P. Burskii and E. A. Buryachenko},
     title = {Some aspects of the nontrivial solvability of homogeneous {Dirichlet} problems for linear equations of arbitrary even order in the disk},
     journal = {Matemati\v{c}eskie zametki},
     pages = {498--508},
     publisher = {mathdoc},
     volume = {77},
     number = {4},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2005_77_4_a1/}
}