@article{RO_2007__41_4_361_0,
     author = {Hertz, Alain and Varone, Sacha},
     title = {A note on tree realizations of matrices},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {361--366},
     publisher = {EDP-Sciences},
     volume = {41},
     number = {4},
     year = {2007},
     doi = {10.1051/ro:2007028},
     mrnumber = {2361290},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/ro:2007028/}
}