@article{1103044532,
author = {Dempster, A. P. and Schuster, S.},
title = {Constructions for poles and polars in $n$-dimensions.},
journal = {Pacific J. Math.},
volume = {5},
number = {4},
year = {1955},
pages = { 197-199},
language = {en},
url = {http://dml.mathdoc.fr/item/1103044532}
}
Dempster, A. P.; Schuster, S. Constructions for poles and polars in $n$-dimensions.. Pacific J. Math., Tome 5 (1955) no. 4, pp. 197-199. http://gdmltest.u-ga.fr/item/1103044532/