@article{1029002161,
author = {Jerrard, Richard},
title = {A stronger invariant for homology theory.},
journal = {Michigan Math. J.},
volume = {26},
number = {1},
year = {1979},
pages = { 33-46},
language = {en},
url = {http://dml.mathdoc.fr/item/1029002161}
}
Jerrard, Richard. A stronger invariant for homology theory.. Michigan Math. J., Tome 26 (1979) no. 1, pp. 33-46. http://gdmltest.u-ga.fr/item/1029002161/