Hideo Bannai Shunsuke Inenaga Ayumi Shinohara Masayuki Takeda Inferring Strings from Graphs and Arrays. 208-217 http://dx.doi.org/10.1007/978-3-540-45138-9_15 2003 conf/mfcs/2003 MFCS db/conf/mfcs/mfcs2003.html#BannaiIST03