@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/