@article{YJOR_2006_16_1_a4,
     author = {Nikias Sarafoglou and Arne M. Andersson and Ingvar Holmberg and Olle Ohlsson},
     title = {Spatial {Infrastructure} and {Productivity} in {Sweden}},
     journal = {Yugoslav journal of operations research},
     pages = {67 },
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/YJOR_2006_16_1_a4/}
}