Ferreira, R., De Almeida, A. and Ferreira, H. (2010) “Multi-attribute p-median model for location of back-up transformers”, Brazilian Journal of Operations & Production Management, 7(2), pp. 09-28. Available at: https://bjopm.emnuvens.com.br/bjopm/article/view/V7N2A1_ (Accessed: 20April2019).