Pinar Heggernes Karol Suchan Ioan Todinca Yngve Villanger Characterizing Minimal Interval Completions. 236-247 2007 conf/stacs/2007 STACS http://dx.doi.org/10.1007/978-3-540-70918-3_21 db/conf/stacs/stacs2007.html#HeggernesSTV07