@ARTICLE{KlaMar:FHext(2006),
  author  = {Martin Klazar and Adam Marcus},
  title   = {Extensions of the linear bound in the {F}\"uredi--{H}ajnal conjecture},
  journal = {Adv. in Appl. Math.},
  year    = {2006},
  volume  = {38},
  number  = {2},
  pages   = {258--266}
}