@article{IIGUM_2014_8_a7,
     author = {R. Enkhbat and T. Bayartugs},
     title = {Fractional {Optimization} {Problems}},
     journal = {The Bulletin of Irkutsk State University. Series Mathematics},
     pages = {104--114},
     year = {2014},
     volume = {8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IIGUM_2014_8_a7/}
}