Katherine Shu-Min Li Yu-Chen Hung Jr-Yang Huang Multiple Scan Trees Synthesis for Test Time/Data and Routing Length Reduction under Output Constraint. 231-236 2009 Asian Test Symposium http://doi.ieeecomputersociety.org/10.1109/ATS.2009.60 conf/ats/2009 db/conf/ats/ats2009.html#LiHH09