C. T. Leiserson-c and . Rivest-r, Introduction à l'algorithmique, Dunod, 1994.

F. S. Boursier-p, Geographic Data Quality : From Assessment to Exploitation, Cartographica, n° 33: 1/Carto, pp.33-40, 1997.

F. S. and N. J. Boursier-p, Representing Quality Depending on the use context, Proc. Joint European Conference and Exhibition on Geographical Information (JEC'96), pp.73-77, 1996.

F. S. Roberts, Graph Theory and its applications to problems of society, CBMS-NSF, Regional Conference Seties in Applied Mathematics, vol.29, pp.7-13, 1978.
DOI : 10.1137/1.9781611970401

L. R. Milleret-raffort, Les bases de données en géomatique, Hermès, 1993.

L. R. Thompson-d, Fundamentals of spatial information systems, The APIC series, 1995.

N. J. Koumpo-t and . Tapamo-h, Calcul du degré de retournement d'un graphe, 5° Colloque Africain sur la Recherche en Informatique (CARI'2000), pp.57-64, 2000.