@article{10_2298_FIL1918091G,
     author = {Ying Gao and Zhihui Xu},
     title = {Approximate proper efficiency for multiobjective optimization problems},
     journal = {Filomat},
     pages = {6091 },
     year = {2019},
     volume = {33},
     number = {18},
     doi = {10.2298/FIL1918091G},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.2298/FIL1918091G/}
}