CaiGHHSWW88'

@article{DBLP:journals/siamcomp/CaiGHHSWW88,
  author    = {Jin-yi Cai and
               Thomas Gundermann and
               Juris Hartmanis and
               Lane A. Hemachandra and
               Vivian Sewelson and
               Klaus W. Wagner and
               Gerd Wechsung},
  title     = {The Boolean Hierarchy I: Structural Properties},
  journal   = {SIAM J. Comput.},
  volume    = {17},
  number    = {6},
  year      = {1988},
  pages     = {1232-1252},
  ee        = {http://dx.doi.org/10.1137/0217078},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}