@article{HellwigVolkmann2013,
  author    = {Angelika Hellwig and Lutz Volkmann},
  title     = {The connectivity of a graph and its complement},
  journal   = {Discrete applied mathematics},
  volume    = {Vol. 156},
  number    = {Iss. 17},
  pages     = {3325 -- 3328},
  year      = {2013},
}