@article{DCG_1990__5_2_131129,
     author = {K. Abrahamson},
     title = {On the {Modality} of {Convex} {Polygons.}},
     journal = {Discrete & computational geometry},
     pages = {409--420},
     publisher = {mathdoc},
     volume = {5},
     number = {2},
     year = {1990},
     zbl = {0712.52006},
     url = {http://geodesic.mathdoc.fr/item/DCG_1990__5_2_131129/}
}