@article{YJOR_1998_8_1_a7,
     author = {Dionisio P\'erez-Brito and Nenad Mladenovi\'c and Jos\'e A. Moreno-P\'erez},
     title = {A {Note} on {Spanning} {Trees} for {Network} {Location} {Problems}},
     journal = {Yugoslav journal of operations research},
     pages = {129 },
     publisher = {mathdoc},
     volume = {8},
     number = {1},
     year = {1998},
     zbl = {0951.90032},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/YJOR_1998_8_1_a7/}
}