@article{CC_2009_38_2_a9,
     author = {Verstraete, J\"org},
     title = {Fuzzy regions: interpretations of surface area and distance},
     journal = {Control and Cybernetics},
     pages = {509--526},
     publisher = {mathdoc},
     volume = {38},
     number = {2},
     year = {2009},
     zbl = {1301.68243},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CC_2009_38_2_a9/}
}