@article{PIM_1977_N_S_22_36_a15,
     author = {Jovan D. Ke\v{c}ki\'c},
     title = {Analogies {Between} {Differential} {And} {Difference} {Equations:} {Singular} {Solutions} {Of} {Difference} {Equations} {Of} {Clairaut's} {Type}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {131 },
     publisher = {mathdoc},
     volume = {_N_S_22},
     number = {36},
     year = {1977},
     url = {http://geodesic.mathdoc.fr/item/PIM_1977_N_S_22_36_a15/}
}