@article{SJC_2009_3_4_a3,
     author = {Spiridonova, Margarita},
     title = {Operational {Methods} in the {Environment} of a {Computer} {Algebra} {System}},
     journal = {Serdica Journal of Computing},
     pages = {381--424},
     publisher = {mathdoc},
     volume = {3},
     number = {4},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SJC_2009_3_4_a3/}
}