GonnetM86'

@article{DBLP:journals/siamcomp/GonnetM86,
  author    = {Gaston H. Gonnet and
               J. Ian Munro},
  title     = {Heaps on Heaps},
  journal   = {SIAM J. Comput.},
  volume    = {15},
  number    = {4},
  year      = {1986},
  pages     = {964-971},
  ee        = {http://dx.doi.org/10.1137/0215068},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}