A New Method for Constrained Optimization Problems. - J. Kowalik; Michael R. Osborne; David M. Ryan (Oper. Res., 1969)

On the solution of highly degenerate linear programmes. - David M. Ryan; Michael R. Osborne (Math. Program., 1988)

Flight Attendant Rostering for Short-Haul Airline Operations. - Paul R. Day; David M. Ryan (Oper. Res., 1997)

Integrated Simulation, Heuristic and Optimisation Approaches to Staff Scheduling. - Andrew J. Mason; David M. Ryan; David M. Panton (Oper. Res., 1998)

An optimal solution procedure for the multiple tour maximum collection problem using column generation. - Steven E. Butt; David M. Ryan (Comput. Oper. Res., 1999)

Inexact Cuts in Benders Decomposition. - Golbon Zakeri; Andrew B. Philpott; David M. Ryan (SIAM J. Optim., 2000)

Optimized Crew Scheduling at Air New Zealand. - E. Rod Butchers; Paul R. Day; Andrew P. Goldie; Stephen Miller; Jeff A. Meyer; David M. Ryan; Amanda C. Scott; Chris A. Wallace (Interfaces, 2001)

Simultaneous disruption recovery of a train timetable and crew roster in real time. - Cameron G. Walker; Jody N. Snowdon; David M. Ryan (Comput. Oper. Res., 2005)

Improving computational capabilities for addressing volume constraints in forest harvest scheduling problems. - Juan Pablo Vielma; Alan T. Murray; David M. Ryan; Andrés Weintraub (Eur. J. Oper. Res., 2007)

The train driver recovery problem - A set partitioning based model and solution method. - Natalia J. Rezanova; David M. Ryan (Comput. Oper. Res., 2010)

An iterative approach to robust and integrated aircraft routing and crew scheduling. - Oliver Weide; David M. Ryan; Matthias Ehrgott (Comput. Oper. Res., 2010)

An exact method for the double TSP with multiple stacks. - Richard Martin Lusby; Jesper Larsen; Matthias Ehrgott; David M. Ryan (Int. Trans. Oper. Res., 2010)

Railway track allocation: models and methods. - Richard Lusby; Jesper Larsen; Matthias Ehrgott; David M. Ryan (OR Spectr., 2011)

A comparison of stochastic programming and bi-objective optimisation approaches to robust airline crew scheduling. - Bassy Tam; Matthias Ehrgott; David M. Ryan; Golbon Zakeri (OR Spectr., 2011)

Routing Trains Through Railway Junctions: A New Set-Packing Approach. - Richard Lusby; Jesper Larsen; David M. Ryan; Matthias Ehrgott (Transp. Sci., 2011)

A set packing inspired method for real-time junction train routing. - Richard Lusby; Jesper Larsen; Matthias Ehrgott; David M. Ryan (Comput. Oper. Res., 2013)

Integer programming methods for large-scale practical classroom assignment problems. - Antony E. Phillips; Hamish Waterer; Matthias Ehrgott; David M. Ryan (Comput. Oper. Res., 2015)

Integer programming for minimal perturbation problems in university course timetabling. - Antony E. Phillips; Cameron G. Walker; Matthias Ehrgott; David M. Ryan (Ann. Oper. Res., 2017)