@article{DankelmannHellwigVolkmann2013,
  author    = {Peter Dankelmann and Angelika Hellwig and Lutz Volkmann},
  title     = {On the connectivity of diamond-free graphs},
  journal   = {Discrete applied mathematics},
  volume    = {Vol. 155},
  number    = {Iss. 16},
  pages     = {2111 -- 2117},
  year      = {2013},
}