@article{MZ_1994__217_1_174690,
     author = {Stephen P. Humphries},
     title = {Quotients of {Coxeter} complexes, fundamental groupoids and {Regular} {Graphs.}},
     journal = {Mathematische Zeitschrift},
     pages = {247--274},
     publisher = {mathdoc},
     volume = {217},
     number = {1},
     year = {1994},
     zbl = {0807.57002},
     url = {http://geodesic.mathdoc.fr/item/MZ_1994__217_1_174690/}
}