%0 Journal Article %A Hakula, Harri %A Rasila, Antti %A Vuorinen, Matti %T Computation of exterior moduli of quadrilaterals %J Electronic transactions on numerical analysis %D 2013 %P 436-451 %V 40 %I mathdoc %U http://geodesic.mathdoc.fr/item/ETNA_2013__40__a2/ %G en %F ETNA_2013__40__a2