Confirmation of a galaxy cluster hidden behind the Galactic bulge using the VVV surveyGeorgina Coldwell, Sol Alonso, Fernanda Duplancic, Maren Hempel, Valentin D. Ivanov and Dante MinnitiA&A, 569 (2014) A49DOI: https://doi.org/10.1051/0004-6361/201423464