@article{PIM_1990_N_S_48_62_a20,
     author = {Vojislav Mari\'c and Miodrag Tomi\'c},
     title = {A {Classification} {Of} {Solutions} {Of} {Second} {Order} {Linear} {Differential} {Equations} {By} {Means} {Of} {Regularly} {Varying} {Functions}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {199 },
     publisher = {mathdoc},
     volume = {_N_S_48},
     number = {62},
     year = {1990},
     url = {http://geodesic.mathdoc.fr/item/PIM_1990_N_S_48_62_a20/}
}