K. Dobrindt and M. Yvinec, Remembering conflicts in history yields dynamic algorithms, Proc. 4th Annu. Internat. Sympos. Algorithms Comput. (ISAAC 93), pp.21-30, 1993.
DOI : 10.1007/3-540-57568-5_231

S. Ghali and A. J. Stewart, Incremental Update of the Visibility Map as Seen by a Moving Viewpoint in Two Dimensions, Proc. Eurographics Workshop on Comp. Anim. and Simul, pp.3-14, 1996.
DOI : 10.1007/978-3-7091-7486-9_1

]. M. Ovl81, J. Overmars, and . Van-leeuwen, Maintenance of configurations in the plane, J. Comput. Syst. Sci, vol.23, pp.166-204, 1981.

M. Pocchiola and G. Vegter, THE VISIBILITY COMPLEX, Special issue devoted to ACM-SoCG'93. [Riv97] S.Rivì ere. Visibility computations in 2D polygonal scenes, pp.279-308, 1996.
DOI : 10.1142/S0218195996000204