Robuta

https://www.aanda.org/articles/aa/full_html/2013/07/aa20423-12/aa20423-12.html A comprehensive picture of baryons in groups and clusters of galaxies | Astronomy & Astrophysics... groups and clusters https://www.ul.ie/gaeilge/group/10/content/3317 Research Centres, Groups and Clusters | University of Limerick groups and clusters research centres university of limerick