@article{10_4153_CJM_2009_047_5,
     author = {Sidman, Jessica and Sullivant, Seth},
     title = {Prolongations and {Computational} {Algebra}},
     journal = {Canadian journal of mathematics},
     pages = {930--949},
     year = {2009},
     volume = {61},
     number = {4},
     doi = {10.4153/CJM-2009-047-5},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2009-047-5/}
}