@article{10_37236_179,
     author = {Ralph H. Buchholz and Warwick de Launey},
     title = {An edge-minimization problem for regular polygons},
     journal = {The electronic journal of combinatorics},
     year = {2009},
     volume = {16},
     number = {1},
     doi = {10.37236/179},
     zbl = {1217.05055},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/179/}
}