@article{02104378, title = {A functorial approach to differential characters.}, journal = {Geometry \& Topology}, volume = {8}, year = {2004}, pages = {81-93}, doi = {10.2140/agt.2004.4.81}, zbl = {1058.57024}, language = {en}, url = {http://dml.mathdoc.fr/item/02104378} }
Turner, Paul. A functorial approach to differential characters.. Geometry & Topology, Tome 8 (2004) pp. 81-93. doi : 10.2140/agt.2004.4.81. http://gdmltest.u-ga.fr/item/02104378/