@article{MV_1949_1_1_a1,
     author = {S. Fempl},
     title = {O gornjoj granici razlike integrala proizvoda i proizvoda integrala},
     journal = {Matemati\v{c}ki vesnik},
     pages = {21 },
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1949},
     url = {http://geodesic.mathdoc.fr/item/MV_1949_1_1_a1/}
}