@article{1102779247,
author = {McMahon, Douglas C. and Nachman, Louis J.},
title = {An intrinsic characterization for PI flows.},
journal = {Pacific J. Math.},
volume = {91},
number = {2},
year = {1980},
pages = { 391-403},
language = {en},
url = {http://dml.mathdoc.fr/item/1102779247}
}
McMahon, Douglas C.; Nachman, Louis J. An intrinsic characterization for PI flows.. Pacific J. Math., Tome 91 (1980) no. 2, pp. 391-403. http://gdmltest.u-ga.fr/item/1102779247/