@article{1102978246, author = {Chacon, R. V. and McGrath, S. A.}, title = {Estimates of positive contractions.}, journal = {Pacific J. Math.}, volume = {31}, number = {3}, year = {1969}, pages = { 609-620}, language = {en}, url = {http://dml.mathdoc.fr/item/1102978246} }
Chacon, R. V.; McGrath, S. A. Estimates of positive contractions.. Pacific J. Math., Tome 31 (1969) no. 3, pp. 609-620. http://gdmltest.u-ga.fr/item/1102978246/