Ryuhei Miyashiro Hideya Iwasaki Tomomi Matsui Characterizing Feasible Pattern Sets with a Minimum Number of Breaks. 78-99 http://dx.doi.org/10.1007/978-3-540-45157-0_5 2002 conf/patat/2002 PATAT db/conf/patat/patat2002.html#MiyashiroIM02