@article{GDZPPN000364088,
title = {Complexes Whose Boundaries Cannot Be Pushed Around.},
journal = {Discrete \& computational geometry},
volume = {4},
year = {1989},
pages = {365-374},
zbl = {0676.57007},
url = {http://dml.mathdoc.fr/item/GDZPPN000364088}
}
Bloch, E.D. Complexes Whose Boundaries Cannot Be Pushed Around.. Discrete & computational geometry, Tome 4 (1989) pp. 365-374. http://gdmltest.u-ga.fr/item/GDZPPN000364088/