Chaivatna Sumetphong และ Supachai Tangwongsan. (2011) Recognizing broken characters in historical documents and solving other set-partitioning problems. Mahido University:ม.ป.ท.Chaivatna Sumetphong และ Supachai Tangwongsan. 2011. Recognizing broken characters in historical documents and solving other set-partitioning problems. ม.ป.ท.:Mahido University;Chaivatna Sumetphong และ Supachai Tangwongsan. Recognizing broken characters in historical documents and solving other set-partitioning problems. ม.ป.ท.:Mahido University, 2011. Print.