@article{RO_2011__45_4_315_0,
     author = {Escudero, Laureano Fernando and Mu\~noz, Susana},
     title = {On designing connected rapid transit networks reducing the number of transfers},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {315--338},
     publisher = {EDP-Sciences},
     volume = {45},
     number = {4},
     year = {2011},
     doi = {10.1051/ro/2011116},
     mrnumber = {2881358},
     zbl = {1235.90024},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ro/2011116/}
}