The PVLAS experiment: measuring vacuum magnetic birefringence and dichroism with a birefringent Fabry–Perot cavityFederico Della Valle, Aldo Ejlli, Ugo Gastaldi, Giuseppe Messineo, Edoardo Milotti, Ruggero Pengo, Giuseppe Ruoso and Guido ZavattiniEur. Phys. J. C, 76 1 (2016) 24DOI: https://doi.org/10.1140/epjc/s10052-015-3869-8