"Intra-day Surgical Scheduling & PACU Patient Flow."

Daily, Bethany, Peter Dunn, Retsef Levi, Ashleigh Range, and Cecilia Zenteno. Work in Progress. (Part of the thesis of Ashleigh Range), MIT Sloan Working Paper 5333-13. Cambridge, MA: MIT Sloan School of Management, December 2013.

"Delay of Transfer from the Intensive Care Unit: A Prospective Observational Study of Incidence, Causes and Financial Impact."

Johnson, Daniel W., Ulrich Schmidt, Edward A. Bittner, Benjamin Christensen, Retsef Levi and Richard M. Pino. Critical Care Vol. 17, No. 4 (2013): R128.

"Online Make-to-Order Joint Replenishment Model: Primal Dual Competitive Algorithms."

Buchbinder, Niv, Tracy Kimbrel, Retsef Levi, Konstantin Makarychev and Maxim Sviridenko. Operations Research Vol. 61, No. 4 (2013): 1014-1029.

"Approximation Algorithms for the Stochastic Lot-Sizing Problem with Order Lead Times."

Levi, Retsef and Cong Shi. Operations Research Vol. 61, No. 3 (2013): 593-602. Appendix.

"NP-Hardness Proof for the Assembly Problem with Stationary Setup and Additive Holding Costs."

Levi, Retsef, and Liron Yedidsion. Operations Research Letters Vol. 41, No. 2 (2013): 134-137.

"The Efficiency of Revenue Sharing Contracts in Joint Ventures in Operations Management."

Levi, Retsef, Georgia Perakis, Cong Shi and Wei Sun, Working Paper. December 2012.