Chen, Jindong; Han, Yijie (1990), "Shortest paths on a polyhedron", Proceedings of the 6th Annual Symposium on Computational Geometry (SoCG 1990), ACM Press, pp. 360–369, doi:10.1145/98524.98601, ISBN0-89791-362-0, S2CID7498502
Chen, Jindong; Han, Yijie (1990), "Shortest paths on a polyhedron", Proceedings of the 6th Annual Symposium on Computational Geometry (SoCG 1990), ACM Press, pp. 360–369, doi:10.1145/98524.98601, ISBN0-89791-362-0, S2CID7498502