@article{YJOR_2014_24_2_a9,
     author = {Robert Lin},
     title = {Note on {Fuzzy} {Sets}},
     journal = {Yugoslav journal of operations research},
     pages = {299 },
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/YJOR_2014_24_2_a9/}
}