NGC 3894: a young radio galaxy seen by Fermi-LAT G. Principe, G. Migliori, T. J. Johnson, F. D’Ammando, M. Giroletti, M. Orienti, C. Stanghellini, G. B. Taylor, E. Torresi and C. C. Cheung A&A, 635 (2020) A185 Published online: 01 April 2020 DOI: 10.1051/0004-6361/201937049