@article{PIM_1986_N_S_40_54_a2,
     author = {Marica D. Pre\v{s}i\'c},
     title = {A {Generalization} of {Equivalence} {Relations}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {17 },
     publisher = {mathdoc},
     volume = {_N_S_40},
     number = {54},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1986_N_S_40_54_a2/}
}