@article{MV_1971_23_1_a23,
     author = {PL. Kannappan},
     title = {Remark on a paper of {R.} {Daci\'c}},
     journal = {Matemati\v{c}ki vesnik},
     pages = {199 },
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {1971},
     url = {http://geodesic.mathdoc.fr/item/MV_1971_23_1_a23/}
}