(Some links may require license)
I. Efrat, Powers of totally positive subgroups of fields, Journal of Algebra 320 (2008), 3104-3112.
I. Efrat and K. Osiak, Topological spaces as spaces of R-places, Journal of Pure and Applied Algebra 215 (2011), 839-846.
I. Efrat and J. Minac, On the descending central sequence of absolute Galois groups, American Journal of Mathematics 133 (2011), 1503-1532; arXiv version
S.K. Chebolu, I. Efrat and J. Minac, Quotients of absolute Galois groups which determine the entire Galois cohomology, Mathematische Annalen 352 (2012), 205-221; arXiv version
I. Efrat and J. Minac, Galois groups and cohomological functors; arXiv version
I. Efrat and J. Minac, Small Galois groups that encode valuations, to appear in Acta Arithmetica; arXiv version