A least-squares primal-dual algorithm for solving linear programming problems. - Earl R. Barnes; Victoria Chen; Balaji Gopalakrishnan; Ellis L. Johnson (Oper. Res. Lett., 2002)

Airline Crew Scheduling: State-of-the-Art. - Balaji Gopalakrishnan; Ellis L. Johnson (Ann. Oper. Res., 2005)

A least-squares minimum-cost network flow algorithm. - Balaji Gopalakrishnan; Seunghyun Kong; Earl R. Barnes; Ellis L. Johnson; Joel S. Sokol (Ann. Oper. Res., 2011)