@article{deKPa2pcr,
  title = "Improved lower bounds for the 2-page crossing numbers of {$K_{m,n}$} and {$K_n$} via semidefinite programming",
  author = "E. de Klerk and D.V. Pasechnik",
  year = "2012",
  journal = "SIAM Journal on Optimization",
  pages = "581--595",
  url = "http://arxiv.org/abs/1110.4824",
  volume = "22",
}