@incollection{DBLP:series/sci/HerikW08,
  author    = {H. Jaap van den Herik and
               Mark H. M. Winands},
  title     = {Proof-Number Search and Its Variants},
  booktitle = {Oppositional Concepts in Computational Intelligence},
  year      = {2008},
  pages     = {91-118},
  ee        = {http://dx.doi.org/10.1007/978-3-540-70829-2_6},
  crossref  = {DBLP:series/sci/2008-155},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@book{DBLP:series/sci/2008-155,
  editor    = {Hamid R. Tizhoosh and
               Mario Ventresca},
  title     = {Oppositional Concepts in Computational Intelligence},
  booktitle = {Oppositional Concepts in Computational Intelligence},
  publisher = {Springer},
  series    = {Studies in Computational Intelligence},
  volume    = {155},
  year      = {2008},
  isbn      = {978-3-540-70826-1},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}