@article{PORMA_2006__63_3_53131,
     author = {Crabb, M.J. and Munn, W.D.},
     title = {On the contracted -algebra of a polycyclic monoid.},
     journal = {Portugaliae mathematica},
     pages = {327--334},
     publisher = {mathdoc},
     volume = {63},
     number = {3},
     year = {2006},
     zbl = {1113.46046},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_2006__63_3_53131/}
}