1. Akitaya, H.A., Aloupis, G., Erickson, J., Tóth, Cs.D.: Recognizing weakly simple polygons. Discrete Comput. Geom. 58(4), 785–821 (2017)
2. Aleksandrov, A.D.: Convex Polyhedra. Gosudarstv. Izdat. Tehn.-Teor. Lit., Moscow (1950). (in Russian)
3. Alexandrov, A.D.: Convex Polyhedra. Springer Monographs in Mathematics. Springer, Berlin (2005)
4. Ballmann,W.: Der Satz von Lusternik und Schnirelmann. In: Beiträge zur Differentialgeometrie, vol. 1. Bonner Math. Schriften, vol. 102, pp. 1–25. University of Bonn, Bonn (1978)
5. Ballmann, W., Thorbergsson, G., Ziller, W.: On the existence of short closed geodesics and their stability properties. In: Seminar on Minimal Submanifolds. Annals of Mathematics Studies, vol. 103, pp. 53–63. Princeton University Press, Princeton (1983)