TY  - JOUR
AU  - D.N. Holtzman
TI  - Product structures in pyramids of higher order cohomology operations.
JO  - Mathematica Scandinavica
PY  - 1985
SP  - 155
EP  - 170
VL  - 57
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MS2_1985__57_166946/
ID  - MS2_1985__57_166946
ER  -