@article{10_37236_1459, author = {Patricia Hersh}, title = {Deformation of chains via a local symmetric group action}, journal = {The electronic journal of combinatorics}, year = {1999}, volume = {6}, doi = {10.37236/1459}, zbl = {0921.05062}, url = {http://geodesic.mathdoc.fr/articles/10.37236/1459/} }