Selective excitations of a Kerr-nonlinear resonator: exactly solvable approach Anna R. Shahinyan, Anahit R. Tamazyan and Gagik Yu. Kryuchkyan Eur. Phys. J. D, 70 6 (2016) 131 Published online: 09 June 2016 DOI: 10.1140/epjd/e2016-60707-7