@article{04138752, title = {Boundaries in digital planes.}, journal = {Journal of Applied Mathematics and Stochastic Analysis}, volume = {3}, year = {1990}, pages = {27-56}, doi = {10.1155/S1048953390000041}, zbl = {0695.54017}, language = {en}, url = {http://dml.mathdoc.fr/item/04138752} }
Khalimsky, Efim; Kopperman, Ralph; Meyer, Paul R. Boundaries in digital planes.. Journal of Applied Mathematics and Stochastic Analysis, Tome 3 (1990) pp. 27-56. doi : 10.1155/S1048953390000041. http://gdmltest.u-ga.fr/item/04138752/