@article{MV_1957_9_3-4_a10,
     author = {B. Rachajsky},
     title = {Sur les syst\`emes d'\'equations aux d\'eriv\'ees partielles du second ordre \`a trois variables ind\'ependantes r\'eductibles \`a ceux de {Charpit}},
     journal = {Matemati\v{c}ki vesnik},
     pages = {245 },
     publisher = {mathdoc},
     volume = {9},
     number = {3-4},
     year = {1957},
     url = {http://geodesic.mathdoc.fr/item/MV_1957_9_3-4_a10/}
}