Please, refer to the ACE system in your articles if you are using it for your computations. Please, use one of the following references for the user's reference manual. Thank you very much for that:

BibTeX references

  @techreport{ACE30,
     author      = {Veigneau, S.},
     title       = {{ACE}, an {Algebraic Combinatorics Environment} for
                   the computer algebra system {MAPLE}:
                   {User's Reference Manual, Version 3.0}},
     number      = {98--11},
     year        = {1998},
     institution = {IGM},
     type        = {Report}
  }

  @techreport{ACE20,
     author      = {Veigneau, S.},
     title       = {{ACE}, an {Algebraic Combinatorics Environment} for
                   the computer algebra system {MAPLE}:
                   {User's Reference Manual, Version 2.0}},
     year        = {1996},
     number      = {97--05},
     institution = {IGM},
     type        = {Report}
  }

  @techreport{ACE10,
     author      = {Veigneau, S.},
     title       = {{ACE}, an {Algebraic Combinatorics Environment} for
                   the computer algebra system {MAPLE}:
                   {User's Reference Manual, Version 1.0}},
     year        = {1995},
     number      = {95--14},
     institution = {IGM},
     type        = {Report}
  }
  

Simple LaTeX references

  \bibitem{bib-ACE30} {S. Veigneau}, {\it ACE, an Algebraic
                      Combinatorics Environment for the computer
                      algebra system MAPLE\/}, {\it User's Reference
                      Manual\/}, {\it Version 3.0\/}, IGM {\bf 98--11},
                      Universit\'e de Marne-la-Vall\'ee, 1998.

  \bibitem{bib-ACE20} {S. Veigneau}, {\it ACE, an Algebraic
                      Combinatorics Environment for the computer
                      algebra system MAPLE\/}, {\it User's Reference
                      Manual\/}, {\it Version 2.0\/}, IGM {\bf 97--05},
                      Universit\'e de Marne-la-Vall\'ee, 1996.

  \bibitem{bib-ACE10} {S. Veigneau}, {\it ACE, an Algebraic
                      Combinatorics Environment for the computer
                      algebra system MAPLE\/}, {\it User's Reference
                      Manual\/}, {\it Version 1.0\/}, IGM {\bf 95--14},
                      Universit\'e de Marne-la-Vall\'ee, 1995.