Scheduling ordered open shops. - Chang-yung Liu; Robert L. Bulfin Jr. (Comput. Oper. Res., 1987)

Scheduling unit processing time jobs on a single machine with multiple criteria. - Chuen-Lung Chen; Robert L. Bulfin Jr. (Comput. Oper. Res., 1990)

Minimizing the weighted number of tardy jobs on a two-machine flow shop. - Robert L. Bulfin Jr.; Rym M'Hallah (Comput. Oper. Res., 2003)