Open Science Research Excellence
Luis M. Villar and  Olga M. Alegre,  Online Programme of Excellence Model (OPEM).   journal   = {International Journal of Social, Behavioral, Educational, Economic, Business and Industrial Engineering}, [online]. World Academy of Science, Engineering and Technology. November 2007, vol. 11(11). 680 - 687[viewed 21 February 2019]. Available from: http://waset.org/publications/2573.