Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts
@article{MV_1969_21_1_a10, author = {J. D. Ke\v{c}ki\'c}, title = {O jednoj klasi parcijalnih jedna\v{c}ina}, journal = {Matemati\v{c}ki vesnik}, pages = {71 }, publisher = {mathdoc}, volume = {21}, number = {1}, year = {1969}, url = {http://geodesic.mathdoc.fr/item/MV_1969_21_1_a10/} }
J. D. Kečkić. O jednoj klasi parcijalnih jednačina. Matematički vesnik, Tome 21 (1969) no. 1, p. 71 . http://geodesic.mathdoc.fr/item/MV_1969_21_1_a10/