Triple and quartic interactions of Higgs bosons in the two-Higgs-doublet model with CP-violation M.N. Dubinin and A.V. Semenov Eur. Phys. J. C, 28 2 (2003) 223-236 Published online: 14 March 2003 DOI: 10.1140/epjc/s2003-01141-5