@article{DBLP:journals/tcs/AcetoFIN06,
  author    = {Luca Aceto and
               Wan Fokkink and
               Anna Ing{\'o}lfsd{\'o}ttir and
               Sumit Nain},
  title     = {Bisimilarity is not finitely based over BPA with interrupt},
  journal   = {Theor. Comput. Sci.},
  volume    = {366},
  number    = {1-2},
  year      = {2006},
  pages     = {60-81},
  ee        = {http://dx.doi.org/10.1016/j.tcs.2006.07.003},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}