Somphong Lerwongrat. (1997) Text compression by sorting transformation. Mahidol University,:ม.ป.ท.Somphong Lerwongrat. 1997. Text compression by sorting transformation. ม.ป.ท.:Mahidol University,;Somphong Lerwongrat. Text compression by sorting transformation. ม.ป.ท.:Mahidol University, 1997. Print.