Francine Blanchet-Sadri Joshua D. Gafni Kevin H. Wilson Correlations of Partial Words. 97-108 2007 conf/stacs/2007 STACS http://dx.doi.org/10.1007/978-3-540-70918-3_9 db/conf/stacs/stacs2007.html#Blanchet-SadriGW07