@misc{Lim_Chong_Rock_Rough_2003,
 author={Lim, Chong Rock and Kim, Hee Sik},
 volume={51},
 editor={Polska Akademia Nauk.},
 number={1},
 copyright={Rights Reserved - Restricted Access},
 address={Warsaw},
 howpublished={online},
 year={2003},
 publisher={Polska Akademia Nauk. Centrum Upowszechniania Nauki.},
 language={eng},
 title={Rough ideals in BCK/BCI-algebras},
 type={Text},
}