Azhmyakov, Vadim, Juan Pablo Fern´andez-Guti´errez, and Stefan Pickl. 2017. “A SEPARATION METHOD FOR MAXIMAL COVERING LOCATION PROBLEMS WITH FUZZY PARAMETERS”. Italian Journal of Pure and Applied Mathematics 37 (July):653-70. https://journals.uniurb.it/index.php/ijpam/article/view/6767.