@InCollection{RCA:14,
author = "Madlener, K. and Reinert, B.",
title = {Relating Rewriting Techniques on Monoids and Rings: Congruences on Monoids and Ideals in Monoid Rings},
year = "1997",
month = "September",
  booktitle = "Reports On Computer Algebra",
  publisher = "Centre for Computer Algebra, University of Kaiserslautern",
  number = 14,
  note ="Online available at http://www.mathematik.uni-kl.de/~zca"
}