%0 Journal Article
%T Postnikov extensions of ring spectra
%A Daniel Dugger
%A Brooke Shipley
%J Mathematics
%D 2006
%I arXiv
%R 10.2140/agt.2006.6.1785
%X We give a functorial construction of k-invariants for ring spectra and use these to classify extensions in the Postnikov tower of a ring spectrum.
%U http://arxiv.org/abs/math/0604260v2