Spontaneously broken 3d Hietarinta/Maxwell Chern–Simons theory and minimal massive gravity Dmitry Chernyavsky, Nihat Sadik Deger and Dmitri Sorokin Eur. Phys. J. C, 80 6 (2020) 556 Published online: 19 June 2020 DOI: 10.1140/epjc/s10052-020-8090-8