The Ming Dynasty's Tributory Relations with Ryukyu and Its Chande-Partiqularly in the 14th and 15th Centuries. The Journal of Oriental Researches. 1999. 57. 4. 1-35
Ryukyuan Students sent to China in the Beginning of the Ming Dynasty-Research on Foreign Srudents in the China's National Acedny Based on ┣DB Nan-Yong-Zhi (/)-┫DB. 1996. 6-7. 21-56