Two-machine flow-shop scheduling with equal processing time on the second machine for minimizing total weighted completion time. - Hongjun Wei; Jinjiang Yuan (Oper. Res. Lett., 2019)

Unary NP-hardness of transportation and batching scheduling to minimize the total weighted completion time. - Hongjun Wei; Yuan Gao; Jinjiang Yuan (Discret. Appl. Math., 2025)