@article{MV_1963_15_1-4_a4,
     author = {I. \v{S}apkarev},
     title = {Sur des \'equations diff\'erentielles transformables en elles-memes par un changement de fonction},
     journal = {Matemati\v{c}ki vesnik},
     pages = {21 },
     publisher = {mathdoc},
     volume = {15},
     number = {1-4},
     year = {1963},
     url = {http://geodesic.mathdoc.fr/item/MV_1963_15_1-4_a4/}
}