Masahiro Hirao Hiromasa Hoshino Ayumi Shinohara Masayuki Takeda Setsuo Arikawa A Practical Algorithm to Find the Best Subsequence Patterns. 141-154 http://link.springer.de/link/service/series/0558/bibs/1967/19670141.htm 2000 conf/dis/2000 Discovery Science db/conf/dis/dis2000.html#HiraoHSTA00