@article{DankelmannHellwigVolkmann2007,
  author    = {Dankelmann, Peter and Hellwig, Angelika and Volkmann, Lutz},
  title     = {On the connectivity of diamond-free graphs},
  series = {Discrete applied mathematics},
  volume    = {Vol. 155},
  journal   = {Discrete applied mathematics},
  number    = {Iss. 16},
  issn      = {0166-218X (E-Journal); 1872-6771 (E-Journal); 0166-218X (Print)},
  pages     = {2111 -- 2117},
  year      = {2007},
  language  = {en}
}
@article{DankelmannHellwigVolkmann2009,
  author    = {Dankelmann, Peter and Hellwig, Angelika and Volkmann, Lutz},
  title     = {Inverse degree and edge-connectivity},
  series = {Discrete mathematics},
  volume    = {Vol. 309},
  journal   = {Discrete mathematics},
  number    = {Iss. 9},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1872-681X (E-Journal); 0012-365X (Print)},
  pages     = {2943 -- 2947},
  year      = {2009},
  language  = {en}
}