SU(3) coupling schemes for odd-odd nuclei in the interacting boson – fermion – fermion model with both odd proton and odd neutron in natural parity orbits V.K.B. Kota and U. Datta PramanikEur. Phys. J. A, 3 3 (1998) 243-253DOI: https://doi.org/10.1007/s100500050174