The following publications are possibly variants of this publication:
- On the Security of MOR Public Key CryptosystemIn-Sok Lee, Woo-Hwan Kim, Daesung Kwon, Sangil Nahm, Nam-Seok Kwak, Yoo-Jin Baek. asiacrypt 2004: 387-400 [doi]
- A Proposal of a New Public Key Cryptosystem Using Matrices over a RingHeajoung Yoo, Seokhie Hong, Sangjin Lee, Jong In Lim, Okyeon Yi, Maenghee Sung. acisp 2000: 41-48