A sufficient condition for edge 6-colorable planar graphs with maximum degree 6. - Zhengrong Lu; Lingsheng Shi (Discret. Appl. Math., 2022)

Collision Attacks on Reduced RIPEMD-128. - Zhengrong Lu; Hongbo Yu; Xiaoen Lin; Sitong Yuan (IACR Trans. Symmetric Cryptol., 2025)