@article{MV_1978_30_1_a24,
     author = {K. Orlov},
     title = {The different solutions of the partial differential equations and the comparing of them},
     journal = {Matemati\v{c}ki vesnik},
     pages = {179 },
     year = {1978},
     volume = {30},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/MV_1978_30_1_a24/}
}