@techreport{TR-IC-16-03,
   number = {IC-16-03},
   author  = {Maycon Sambinelli and Cândida Nunes da Silva and Orlando
                   Lee},
   title = {On {L}inial's Conjecture for Spine Digraphs},
   month = {June},
   year = {2016},
   institution = {Institute of Computing, University of Campinas},
   note = {In English, 6 pages.
    \par\selectlanguage{english}\textbf{Abstract}
       In  this  paper  we  introduce  a superclass of split digraphs,
       which  we  call \textbf{spine digraphs}. Those are the digraphs
       $D$  whose  vertex set can be partitioned into two sets $X$ and
       $Y$  such  that  the subdigraph induced by $X$ is traceable and
       $Y$  is  a  stable  set.  We also show that Linial's Conjecture
       holds for spine digraphs.
  }
}