1. | 2012A&A...545A.140T | Trinchieri, G.;... | Hot gas in groups: NGC 5328 and the intriguing case of NGC 4756 with XMM-Newton |
2. | 2009A&A...497..667V | Varela, J.; D'O... | WINGS: A WIde-field Nearby Galaxy-cluster Survey. II. Deep optical photometry of... |