@article{SLC_1992_29_a5, author = {M. Hofmeister}, title = {Combinatorial {Aspects} of an {Exact} {Sequence} {That} {Is} {Related} to a {Graph}}, journal = {S\'eminaire lotharingien de combinatoire}, publisher = {mathdoc}, volume = {29}, year = {1992}, url = {http://geodesic.mathdoc.fr/item/SLC_1992_29_a5/} }