@article{MV_1974_26_1_a29,
     author = {K. U\v{s}an and V. Dionin},
     title = {Re\v{s}enie sistemy funkcionalnyh uravnenij},
     journal = {Matemati\v{c}ki vesnik},
     pages = {215 },
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1974},
     url = {http://geodesic.mathdoc.fr/item/MV_1974_26_1_a29/}
}