@article{NSJOM_1979_9_Nonea_5,
     author = {Had\v{z}i\'c Olga and Budin\v{c}evi\'c Mirko},
     title = {A class of~ {T-norms} in the fixed point theory on {PM} spaces},
     journal = {Novi Sad Journal of Mathematics},
     pages = {37-41},
     publisher = {mathdoc},
     volume = {9},
     year = {1979},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1979_9_Nonea_5/}
}