Singular Separatrix Splitting and the Melnikov Method: An Experimental Study. - Amadeu Delshams; Rafael Ramírez-Ros (Exp. Math., 1999)

Splitting Potential and the Poincaré-Melnikov Method for Whiskered Tori in Hamiltonian Systems. - Amadeu Delshams; Pere Gutiérrez (J. Nonlinear Sci., 2000)

KAM Theory and a Partial Justification of Greene's Criterion for Nontwist Maps. - Amadeu Delshams; Rafael de la Llave (SIAM J. Math. Anal., 2000)

Exponentially Small Lower Bounds for the Splitting of Separatrices to Whiskered Tori with Frequencies of Constant Type. - Amadeu Delshams; Marina Gonchenko; Pere Gutiérrez (Int. J. Bifurc. Chaos, 2014)

Exponentially Small Splitting of Separatrices and Transversality Associated to Whiskered Tori with Quadratic Frequency Ratio. - Amadeu Delshams; Marina Gonchenko; Pere Gutiérrez (SIAM J. Appl. Dyn. Syst., 2016)