Exact solution of the 1D Hubbard model with NN and NNN interactions in the narrow-band limit Ferdinando Mancini, Evgeny Plekhanov and Gerardo Sica Eur. Phys. J. B, 86 10 (2013) 408 Published online: 01 October 2013 DOI: 10.1140/epjb/e2013-40527-y