Nong ye, lin ye, yu ye xing zheng su songGuoguang Li, Deruij Zhang · First published 2000Open the Tome
Sin sedae son ttŭgae dijainŏ Song Yŏng-ye ŭi nŏmu shwipko yeppŭn son ttŭgaeYŏng-ye Song · First published 1999Open the Tome