Available now on Astronomy & Astrophysics is a new paper 'Mining R Coronae Borealis stars from Catalina surveys' by C. H. Lee.
http://www.aanda.org/articles/aa/abs/2015/03/aa24638-14/aa24638-14.html
You can download the paper for FREE if you register on the site.
Mike Simonsen (SXN)