@article{MZM_2017_101_1_a2,
     author = {A. I. Barsukov and O. G. Konyukhva},
     title = {Functions {Inverse} to {Weakly} {Hyperbolic} and {Hyperbolic} {Pencils}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {31--42},
     publisher = {mathdoc},
     volume = {101},
     number = {1},
     year = {2017},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2017_101_1_a2/}
}