Liangrui Peng Changsong Liu Xiaoqing Ding Hua Wang Jianming Jin Multi-font printed Mongolian document recognition system. 1-10 2009 DRR http://dx.doi.org/10.1117/12.805864 conf/drr/2009 db/conf/drr/drr2009.html#PengLDWJ09