@article{MZM_1996_59_5_a15,
     author = {O. M. Penkin and Yu. V. Pokornyi},
     title = {On some qualitative properties of equations on a~one-dimensional $CW$-complex},
     journal = {Matemati\v{c}eskie zametki},
     pages = {777--780},
     publisher = {mathdoc},
     volume = {59},
     number = {5},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1996_59_5_a15/}
}