@article{NSJOM_2003_33_2a_6,
     author = {Aleksandar Taka\v{c}i},
     title = {General 

 aggregation operators acting on fuzzy numbers induced by ordinary 

 aggregation operators},
     journal = {Novi Sad Journal of Mathematics},
     pages = {67-76},
     publisher = {mathdoc},
     volume = {33},
     number = {2},
     year = {2003},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2003_33_2a_6/}
}