@inproceedings{DBLP:conf/gd/GiordanoLW08,
  author    = {Francesco Giordano and
               Giuseppe Liotta and
               Sue Whitesides},
  title     = {Embeddability Problems for Upward Planar Digraphs},
  booktitle = {Graph Drawing},
  year      = {2008},
  pages     = {242-253},
  ee        = {http://dx.doi.org/10.1007/978-3-642-00219-9_23},
  crossref  = {DBLP:conf/gd/2008},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}