URL：https://www.researchgate.net/profile/Tobias-Kretz-2/publication/260107883/figure/fig2/AS:341365067141124@1458399182968/Example-with-necessarily-non-trivial-geometry-for-the-intermediate-destination-areas_Q640.jpg
掲載元：https://www.researchgate.net/figure/For-the-example-of-Figure-2-simple-rectangular-areas-are-used-as-intermediate-destination_fig3_260107883
