1. Paul F. Kubwalo and John A. Ryan, Low density parity check irreducible Goppa codes, AFRICON 2007 (2007), 8 pages.[doi]
  2. John A. Ryan and Kondwani Magamba, Equivalent irreducible Goppa codes and the precise number of quintic Goppa codes of length 32, AFRICON 2007 (2007), 1-4.[doi]