@article{GDZPPN00234145X, title = {Real Grassmann polylogarithms and Chern classes.}, journal = {Mathematische Annalen}, volume = {305}, year = {1996}, pages = {157-202}, zbl = {0882.19003}, url = {http://dml.mathdoc.fr/item/GDZPPN00234145X} }
Hain, Richard M.; Jun, Yang. Real Grassmann polylogarithms and Chern classes.. Mathematische Annalen, Tome 305 (1996) pp. 157-202. http://gdmltest.u-ga.fr/item/GDZPPN00234145X/