Multi-Hamiltonian formulations and stability of higher-derivative extensions of 3d Chern–SimonsV. A. Abakumova, D. S. Kaparulin and S. L. LyakhovichEur. Phys. J. C, 78 2 (2018) 115DOI: https://doi.org/10.1140/epjc/s10052-018-5601-y