Total colorings of equibipartite graphs. - Bor-Liang Chen; Lei Dong; Qi Zhang Liu; Kuo-Ching Huang (Discret. Math., 1999)

Edge Colouring of K2n with Spanning Star-Forests Receiving Distinct Colours. - H. P. Yap; Qi Zhang Liu (Graphs Comb., 1999)

Proof of a conjecture of Alan Hartman. - Qi Zhang Liu; H. P. Yap (J. Graph Theory, 1999)

Solving a Supply Chain Optimization Problem Collaboratively. - Hoong Chuin Lau; Andrew Lim 001; Qi Zhang Liu (AAAI/IAAI, 2000)

Edge colorings of K2n with a prescribed condition - I. - Qi Zhang Liu; H. P. Yap (Discret. Math., 2000)

Collaborative Model and Algorithms for Supporting Real-Time Distribution Logistics Systems. - Hoong Chilin Lau; Qi Zhang Liu (Electron. Notes Discret. Math., 2000)

Integrating Local Search and Network Flow to Solve the Inventory Routing Problem. - Hoong Chuin Lau; Qi Zhang Liu; Hirotaka Ono 001 (AAAI/IAAI, 2002)