@article{RSA_1971__19_2_5_0,
     author = {Escoufier, Y.},
     title = {Les liaisons entre groupes d'al\'eas},
     journal = {Revue de Statistique Appliqu\'ee},
     pages = {5--17},
     publisher = {Soci\'et\'e de Statistique de France},
     volume = {19},
     number = {2},
     year = {1971},
     language = {fr},
     url = {http://archive.numdam.org/item/RSA_1971__19_2_5_0/}
}