@article{1177731602, author = {Dwyer, P. S.}, title = {Grouping Methods}, journal = {Ann. Math. Statist.}, volume = {13}, number = {4}, year = {1942}, pages = { 138-155}, language = {en}, url = {http://dml.mathdoc.fr/item/1177731602} }
Dwyer, P. S. Grouping Methods. Ann. Math. Statist., Tome 13 (1942) no. 4, pp. 138-155. http://gdmltest.u-ga.fr/item/1177731602/