Heller84'

BibTeX

@article{DBLP:journals/mst/Heller84,
  author    = {Hans Heller},
  title     = {Relativized Polynomial Hierarchies Extending Two Levels},
  journal   = {Mathematical Systems Theory},
  volume    = {17},
  number    = {2},
  year      = {1984},
  pages     = {71-84},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}