Iman Hajirasouliha Hossein Jowhari Ravi Kumar Ravi Sundaram On Completing Latin Squares. 524-535 2007 conf/stacs/2007 STACS http://dx.doi.org/10.1007/978-3-540-70918-3_45 db/conf/stacs/stacs2007.html#HajirasoulihaJKS07