@article{RSA_1983__31_3_57_0,
     author = {Le Foll, Y. and Burtschy, B.},
     title = {Repr\'esentations optimales des matrices imports-exports},
     journal = {Revue de Statistique Appliqu\'ee},
     pages = {57--72},
     publisher = {Soci\'et\'e de Statistique de France},
     volume = {31},
     number = {3},
     year = {1983},
     language = {fr},
     url = {http://www.numdam.org/item/RSA_1983__31_3_57_0/}
}