Aswath Manohar Serafim Batzoglou TreeRefiner: A Tool for Refining a Multiple Alignment on a Phylogenetic Tree. 111-119 2005 conf/csb/2005 CSB http://doi.ieeecomputersociety.org/10.1109/CSB.2005.53 db/conf/csb/csb2005.html#ManoharB05