@article{MV_1956_8_1-2_a0,
     author = {D. S. Mitrinovitch},
     title = {Sur certaines \'equations aux d\'eriv\'ees partielles \`a deux fonctions inconnues},
     journal = {Matemati\v{c}ki vesnik},
     pages = {3 },
     publisher = {mathdoc},
     volume = {8},
     number = {1-2},
     year = {1956},
     url = {http://geodesic.mathdoc.fr/item/MV_1956_8_1-2_a0/}
}