The following publications are possibly variants of this publication:
- Type Classes in HaskellCordelia V. Hall, Kevin Hammond, Simon L. Peyton Jones, Philip Wadler. ESOP 1994: 241-256
- Type Classes in HaskellCordelia V. Hall, Kevin Hammond, Simon L. Peyton Jones, Philip Wadler. TOPLAS, 18(2):109-138, 1996. [doi]
- Haskell 98: Predefined Types and ClassesSimon L. Peyton Jones. JFP, 13(1):81-96, 2003. [doi]
- Non-stop HaskellAndrew M. Cheadle, A. J. Field, Simon Marlow, Simon L. Peyton Jones, R. Lyndon While. ICFP 2000: 257-267 [doi]
- GUM: A Portable Parallel Implementation of HaskellPhilip W. Trinder, Kevin Hammond, James S. Mattson Jr., A. S. Partridge, Simon L. Peyton Jones. PLDI 1996: 79-88