%0 Journal Article %A Sidman, Jessica %A Sullivant, Seth %T Prolongations and Computational Algebra %J Canadian journal of mathematics %D 2009 %P 930-949 %V 61 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2009-047-5/ %R 10.4153/CJM-2009-047-5 %F 10_4153_CJM_2009_047_5