The software is distributed freely (GPL3), but we ask you to cite it in the following form:

John Abbott and Anna Maria Bigatti
CoCoALib: a C++ library for doing Computations in Commutative Algebra.
Available at http://cocoa.dima.unige.it/cocoalib

John Abbott, Anna Maria Bigatti, Lorenzo Robbiano
CoCoA: a system for doing Computations in Commutative Algebra.
Available at http://cocoa.dima.unige.it

BibTeX

  @misc{CoCoALib,
   author = {Abbott, J. and Bigatti, A. M.},
   title = {{CoCoALib}: a C++ library for doing {C}omputations in {C}ommutative {A}lgebra},
   howpublished ={Available at \texttt{http://cocoa.dima.unige.it/cocoalib}},
  }

  @misc{CoCoA,
   author = {Abbott, J. and Bigatti, A. M. and Robbiano, L.},
   title = {{CoCoA}: a system for doing {C}omputations in {C}ommutative {A}lgebra},
   howpublished ={Available at \texttt{http://cocoa.dima.unige.it}},
  }