Process improvement: one size fits all? segmenting customer base for maximum returns. - Roar Grønhaug; Eleazer Martin; Per-Åge Bæra (WSC, 2003)

Public health: proposals to reduce over-crowding, lengthy stays and improve patient care: study of the geriatric department in Norway's largest hospital. - Eleazer Martin; Roar Grønhaug; Kristin Haugene (WSC, 2003)

Elkem Uses Optimization in Redesigning Its Supply Chain. - Nina Linn Ulstein; Marielle Christiansen; Roar Grønhaug; Nick Magnussen; Marius M. Solomon (Interfaces, 2006)

The Impacts of By-products on Optimal Supply Chain Design. - Marielle Christiansen; Roar Grønhaug (Geometric Modelling, Numerical Simulation, and Optimization, 2007)

A Branch-and-Price Method for a Liquefied Natural Gas Inventory Routing Problem. - Roar Grønhaug; Marielle Christiansen; Guy Desaulniers; Jacques Desrosiers (Transp. Sci., 2010)

Branch and Price for Service Network Design with Asset Management Constraints. - Jardar Andersen; Marielle Christiansen; Teodor Gabriel Crainic; Roar Grønhaug (Transp. Sci., 2011)