@misc{AFRNUC_1980__35_185781,
     title = {[unknown]},
     journal = {Acta Facultatis Rerum Naturalium Universitatis Comenianae},
     pages = {7--239},
     publisher = {mathdoc},
     volume = {35},
     year = {1980},
     url = {http://geodesic.mathdoc.fr/item/AFRNUC_1980__35_185781/}
}