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@article{MS2_1985__57_166945, author = {D.N. Holtzman}, title = {Pyramids of higher order cohomology operations in the p-torsion-free category.}, journal = {Mathematica Scandinavica}, pages = {127--154}, publisher = {mathdoc}, volume = {57}, year = {1985}, zbl = {0562.55018}, url = {http://geodesic.mathdoc.fr/item/MS2_1985__57_166945/} }
D.N. Holtzman. Pyramids of higher order cohomology operations in the p-torsion-free category.. Mathematica Scandinavica, Tome 57 (1985), pp. 127-154. http://geodesic.mathdoc.fr/item/MS2_1985__57_166945/