@article{1077476232,
author = {Kaplan, Samuel},
title = {Extensions of the Pontrjagin duality II: Direct and inverse sequences},
journal = {Duke Math. J.},
volume = {17},
number = {1},
year = {1950},
pages = { 419-435},
language = {en},
url = {http://dml.mathdoc.fr/item/1077476232}
}
Kaplan, Samuel. Extensions of the Pontrjagin duality II: Direct and inverse sequences. Duke Math. J., Tome 17 (1950) no. 1, pp. 419-435. http://gdmltest.u-ga.fr/item/1077476232/