Geographical Information Systems Theory, Applications and Management Third International Conference, GISTAM 2017, Porto, Portugal, April 27-28, 2017, Revised Selected Papers - Ragia, Lemonia; Ragia, Lemonia; Laurini, Robert; Laurini, Robert; Rocha, Jorge Gustavo; Rocha, Jorge Gustavo (Springer International Publishing : Imprint: Springer, 2019)