Artículos:

• 2012: 50º Aniversario de la SEIO. J.M. Angulo
• Historical Evolution of Statistics in Spain. M.A.Gil, P. Gil, L.Pardo
• SEIO and the history of OR in Spain. L.F. Escudero, M.A. López
• Historical development of the Spanish National Statistical Institute (INE) and its relations with the SEIO. M. Gómez
• Historical perspective of the Spanish Society of Statistics and Operations Research. D. Morales, M.C. Pardo