@article{1183552787, author = {Hain, Richard M.}, title = {Mixed Hodge structures on homotopy groups}, journal = {Bull. Amer. Math. Soc. (N.S.)}, volume = {14}, number = {1}, year = {1986}, pages = { 111-114}, language = {en}, url = {http://dml.mathdoc.fr/item/1183552787} }
Hain, Richard M. Mixed Hodge structures on homotopy groups. Bull. Amer. Math. Soc. (N.S.), Tome 14 (1986) no. 1, pp. 111-114. http://gdmltest.u-ga.fr/item/1183552787/