@article{1256053959,
author = {Craggs, Robert},
title = {Improving the intersection of polyhedra in $3$-manifolds},
journal = {Illinois J. Math.},
volume = {12},
number = {4},
year = {1968},
pages = { 567-586},
language = {en},
url = {http://dml.mathdoc.fr/item/1256053959}
}
Craggs, Robert. Improving the intersection of polyhedra in $3$-manifolds. Illinois J. Math., Tome 12 (1968) no. 4, pp. 567-586. http://gdmltest.u-ga.fr/item/1256053959/