Karr85'

BibTeX

@article{DBLP:journals/jsc/Karr85,
  author    = {Michael Karr},
  title     = {Theory of Summation in Finite Terms},
  journal   = {J. Symb. Comput.},
  volume    = {1},
  number    = {3},
  year      = {1985},
  pages     = {303-315},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}