M. K. Gormley and T. B. M. McMaster, \emph{Sub-representation of posets}, Proceedings of the Ninth Prague Topological Symposium (Prague, 2001), Topology Atlas, Toronto, 2002, pp. 135--146. arXiv:math.GN/0204128 @incollection {math.GN/0204128, author = {Gormley, M. K. and McMaster, T. B. M.}, title = {Sub-representation of posets}, pages = {135--146}, booktitle = {Proceedings of the Ninth Topological Symposium (Prague, 2001)}, publisher = {Topology Atlas}, address = {Toronto}, year = {2002}, editor = {Petr Simon}, arxivnumber = {math.GN/0204128}, note = {arXiv:math.GN/0204128}, mrclass = {06A06 54B99}, }