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@article{PIM_1989_N_S_46_60_a25, author = {R. W. Heath}, title = {On a {Question} of {Ljubi\v{s}a} {Ko\v{c}inac}}, journal = {Publications de l'Institut Math\'ematique}, pages = {193 }, publisher = {mathdoc}, volume = {_N_S_46}, number = {60}, year = {1989}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PIM_1989_N_S_46_60_a25/} }
R. W. Heath. On a Question of Ljubiša Kočinac. Publications de l'Institut Mathématique, _N_S_46 (1989) no. 60, p. 193 . http://geodesic.mathdoc.fr/item/PIM_1989_N_S_46_60_a25/