Publications
Å. Hallefjord and K. Jörnsten, Multicommodity network flows with conversions, Opsearch 20(2)(1983)89– 98.
Å. Hallefjord and K. Jörnsten, A note on relaxed gravity models, Environment and Planning A 17(1985)597–603.
Å. Hallefjord and K. Jörnsten, An entropy target point approach to multiobjective programming, International Journal of Systems Science 17(1986)639 – 653.
Å. Hallefjord and K. Jörnsten, Gravity models with multiple objectives – theory and applications, Transportation Research 20B(1986)19 – 39.
O. Eriksson, Å. Hallefjord and K. Jörnsten, A long range forestry planning problem with multiple objectives, European Journal of Operational Research 26(1986)123 –133.
Å. Hallefjord, K. Jörnsten, S. Storøy and S.W. Wallace, A comment on the article “inspection and maintenance optimizations methods” by K.M. Mjelde, European Journal of Operational Research 28(1987)226 – 227.
P. Bogetoft, Å. Hallefjord and M. Kok, On the convergence of reference point methods in multiobjective programming, European Journal of Operational Research 34(1988)56 – 68.
Å. Hallefjord and K. Jörnsten, Constraint generation and surrogate relaxation, Journal of Information and Optimization Sciences 9(2)(1988)1 – 4.
Å. Hallefjord and K. Jörnsten, A critical comment on integer goal programming, Journal of the Operational Research Society 39(1988)101 – 104.
H. Asheim, Å. Hallefjord and D. Haugland, Models for petroleum field exploitation, European Journal of Operational Research 37(1988)58 – 72.
R. Aboudi, Å. Hallefjord, C. Helgesen, R. Helming, K. Jörnsten, A.S. Pettersen, T. Raum and P. Spence, A mathematical programming model for the development of petroleum fields and transport systems, European Journal of Operational Research 43(1989)13 – 25.
R. Aboudi, Å. Hallefjord, R. Helming, and K. Jörnsten, A note on the pivot and complement heuristic for 0–1 programming problems, Operations Research Letters 8(1989)21– 23.
Å. Hallefjord and S. Storøy, Aggregation and disaggregation in integer programming problems, Operations Research 38(1990)619 –623.
J. Barcelo, E. Fernandez, Å. Hallefjord and K. Jörnsten, Lagrangean relaxation and constraint generation procedures for capacitated plant location problems with single sourcing, OR Spectrum 12(1990)79 – 88.
R. Aboudi, Å. Hallefjord and K. Jörnsten, A facet generation and relaxation technique applied to an assignment problem with side constraints, European Journal of Operational Research 50(1991)335 –344.
Å. Hallefjord, K. Jörnsten and P. Värbrand, Solving large scale generalized assignment problems – an aggregation/disaggregation approach, European Journal of Operational Research 64(1993)103 –114.
Å. Hallefjord, R. Helming and K. Jörnsten, Cooperative game theory: A note on an algorithm that probably never was implemented, Asia-Pacific Journal of Operational Research 10 (1993)121– 29.
Å. Hallefjord, K. Jörnsten and S. Storøy, Traffic equilibrium paradoxes when travel demand is elastic, Asia-Pacific Journal of Operational Research 11(1994)41 –50.
Å. Hallefjord, R. Helming and K. Jörnsten, Computing the nucleolus when the characteristic function is given implicitly: A constraint generation approach, International Journal of Game Theory 24(1995)357 – 372.
Å. Hallefjord and S.W. Wallace, Work patterns in project scheduling, Annals of Operations Research (1998), this volume.
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Wallace, S. Modelling - In memory of Åsa Hallefjord. Annals of Operations Research 82, 0 (1998). https://doi.org/10.1023/A:1018947727694
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DOI: https://doi.org/10.1023/A:1018947727694