Are there references available on $HZR$ theory ?

I found on [ncatlab](https://ncatlab.org/nlab/show/HZR-theory) that this is "genuinely $\mathbb Z/ 2\mathbb{Z}$-equivariant cohomology version of ordinary cohomology"

Found nothing on wikipedia, google, arxiv and here.

I thought that such a presentation could be a nice opening to real oriented cohomology theories.