Base stock policies for production/inventory problems with uncertain capacity levels. - Refik Güllü (Eur. J. Oper. Res., 1998)

Cell-loss control in multiplexing of VBR video over ATM networks. - Y. Murat Erten; Refik Güllü; Sinan Neftci (Telecommun. Syst., 2000)

Optimal Lot-Sizing/Vehicle-Dispatching Policies Under Stochastic Lead Times and Stepwise Fixed Costs. - Osman Alp; Nesim K. Erkip; Refik Güllü (Oper. Res., 2003)

Outsourcing Logistics: Designing Transportation Contracts Between a Manufacturer and a Transporter. - Osman Alp; Nesim K. Erkip; Refik Güllü (Transp. Sci., 2003)

Analysis and improvement of the product delivery system of a beer producer in Ankara. - Selcen (Pamuk) Phelps; Murat Köksalan; Refik Güllü (J. Oper. Res. Soc., 2004)

Analysis of an M/G/ queue with batch arrivals and batch-dedicated servers. - Refik Güllü (Oper. Res. Lett., 2004)

Assessing the benefits of remanufacturing option under one-way substitution. - Z. Pelin Bayindir; Nesim K. Erkip; Refik Güllü (J. Oper. Res. Soc., 2005)

Analysis of a Decentralized Supply Chain Under Partial Cooperation. - Refik Güllü; Geert-Jan van Houtum; F. Zeynep Sargut; Nesim K. Erkip (Manuf. Serv. Oper. Manag., 2005)

A Knapsack Model for Bandwidth Management of Prerecorded Multiple MPEG Video Sources. - Y. Murat Erten; Refik Güllü; Haldun Süral; Sinan Neftci (Telecommun. Syst., 2005)

Assessing the benefits of remanufacturing option under one-way substitution and capacity constraint. - Z. Pelin Bayindir; Nesim K. Erkip; Refik Güllü (Comput. Oper. Res., 2007)

Modelling imperfect advance demand information and analysis of optimal inventory policies. - Tarkan Tan; Refik Güllü; Nesim K. Erkip (Eur. J. Oper. Res., 2007)

Value of supplier's capacity information in a two-echelon supply chain. - Ismail Serdar Bakal; Nesim K. Erkip; Refik Güllü (Ann. Oper. Res., 2011)

Optimal inventory policies with non-stationary supply disruptions and advance supply information. - Bilge Atasoy; Refik Güllü; Tarkan Tan (Decis. Support Syst., 2012)

An inventory model with capacity flexibility in the existence of advance capacity information. - Esra Çinar; Refik Güllü (Decis. Support Syst., 2012)

Near-Optimal modified Base Stock Policies for the capacitated inventory Problem with stochastic demand and Fixed Cost. - Okan Örsan Özener; Refik Güllü; Nesim K. Erkip (Asia Pac. J. Oper. Res., 2014)

Joint pricing and inventory control for additive demand models with reference effects. - M. Güray Güler; Taner Bilgiç; Refik Güllü (Ann. Oper. Res., 2015)

Next-day operating room scheduling with uncertain surgery durations: Exact analysis and heuristics. - Taghi Khaniyev; Enis Kayis; Refik Güllü (Eur. J. Oper. Res., 2020)

Risk pooling under demand and price uncertainty. - Refik Güllü; Nesim Erkip (Eur. J. Oper. Res., 2024)

On strategic customers with correlated utility attributes: Effects and information benefits. - Zeynep Gökçe Islier; Refik Güllü (Eur. J. Oper. Res., 2024)

Analysis of an all-or-nothing inventory model with price-dependent intermittent demand and supply uncertainty. - Elifnur Dogruöz; Refik Güllü (Comput. Ind. Eng., 2025)