ChangK62'

BibTeX

@article{DBLP:journals/jsyml/ChangK62,
  author    = {C. C. Chang and
               H. Jerome Keisler},
  title     = {An Improved Prenex Normal Form},
  journal   = {J. Symb. Log.},
  volume    = {27},
  number    = {3},
  year      = {1962},
  pages     = {317-326},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}