@article{NSJOM_1981_11_Nonea_6,
     author = {Pap 

 Endre},
     title = {On 

 semigroup valued additive exhaustive set functions},
     journal = {Novi Sad Journal of Mathematics},
     pages = {59-70},
     publisher = {mathdoc},
     volume = {11},
     year = {1981},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1981_11_Nonea_6/}
}