Che-Lun Hung Chun-Yuan Lin Yeh-Ching Chung Chuan Yi Tang Introducing Variable Gap Penalties into Three-Sequence Alignment for Protein Sequences. 726-731 2008 AINA Workshops http://doi.ieeecomputersociety.org/10.1109/WAINA.2008.101 conf/aina/2008w db/conf/aina/ainaw2008.html#HungLCT08