| Regional Groups |
| ALIO Asociacion Latino-Ibero-Americana de Investigacion Operativa Latin American Ibero Association on Operations Research Website: www.dc.uba.ar/alio/index-en.htm |
| APORS The Association of Asian-Pacific Operational Research Societies Website: www.apors.asia |
| EURO The Association of European Operational Research Societies Website: www.euro-online.org |
| NORAM The Association of North American Operations Research Societies |
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