@article{YJOR_1991_1_2_a2,
     author = {Frank Plastria},
     title = {The {Effects} of {Majority} in {Fermat-Weber} {Problems} {With} {Attraction} and {Repulsion} in a {Pseudometric} {Space}},
     journal = {Yugoslav journal of operations research},
     pages = {141 },
     publisher = {mathdoc},
     volume = {1},
     number = {2},
     year = {1991},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/YJOR_1991_1_2_a2/}
}