@article{01941389, title = {Cochain operations and subspace arrangements.}, journal = {Portugaliae Mathematica. Nova S\'erie}, volume = {60}, year = {2003}, pages = {71-98}, zbl = {1027.18008}, language = {en}, url = {http://dml.mathdoc.fr/item/01941389} }
Klaus, Stephan. Cochain operations and subspace arrangements.. Portugaliae Mathematica. Nova Série, Tome 60 (2003) pp. 71-98. http://gdmltest.u-ga.fr/item/01941389/