@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/