@misc{AMUC_1984__44-45_185884,
     title = {[unknown]},
     journal = {Acta mathematica Universitatis Comenianae},
     pages = {159--168},
     publisher = {mathdoc},
     volume = {44-45},
     year = {1984},
     url = {http://geodesic.mathdoc.fr/item/AMUC_1984__44-45_185884/}
}