Center-Focus Problem for Discontinuous Planar Differential Equations. - Armengol Gasull; Joan Torregrosa (Int. J. Bifurc. Chaos, 2003)

Monodromy and Stability for Nilpotent Critical Points. - María Jesús Álvarez; Armengol Gasull (Int. J. Bifurc. Chaos, 2005)

Dynamics of Some Rational Discrete Dynamical Systems via Invariants. - Anna Cima; Armengol Gasull; Víctor Mañosa (Int. J. Bifurc. Chaos, 2006)

Limit Cycles for Generalized Abel Equations. - Armengol Gasull; Antoni Guillamón (Int. J. Bifurc. Chaos, 2006)

Limit Cycles for Some Abel Equations Having Coefficients without Fixed Signs. - José Luis Bravo Trinidad; M. Fernández; Armengol Gasull (Int. J. Bifurc. Chaos, 2009)

On Poncelet's maps. - Anna Cima; Armengol Gasull; Víctor Mañosa (Comput. Math. Appl., 2010)

Simple examples of planar involutions with non-global Montgomery-Bochner linearizations. - Anna Cima; Armengol Gasull; Francesc Mañosas (Appl. Math. Lett., 2012)

Nonautonomous Two-periodic Gumovski-Mira difference equations. - Anna Cima; Armengol Gasull; Víctor Mañosa (Int. J. Bifurc. Chaos, 2012)

Global Periodicity conditions for Maps and Recurrences via Normal Forms. - Anna Cima; Armengol Gasull; Víctor Mañosa (Int. J. Bifurc. Chaos, 2013)

Periodic points of a Landen transformation. - Armengol Gasull; Mireia Llorens; Víctor Mañosa (Commun. Nonlinear Sci. Numer. Simul., 2018)

Algebraic Limit Cycles in Piecewise Linear Differential Systems. - Claudio A. Buzzi; Armengol Gasull; Joan Torregrosa (Int. J. Bifurc. Chaos, 2018)

On the equilateral pentagonal central configurations. - Martha Alvarez-Ramírez; Armengol Gasull; Jaume Llibre (Commun. Nonlinear Sci. Numer. Simul., 2022)

Pointwise periodic maps with quantized first integrals. - Anna Cima; Armengol Gasull; Víctor Mañosa; Francesc Mañosas (Commun. Nonlinear Sci. Numer. Simul., 2022)

On the Number of Limit Cycles for Piecewise Polynomial Holomorphic Systems. - Armengol Gasull; Gabriel Rondón; Paulo Ricardo da Silva (SIAM J. Appl. Dyn. Syst., 2024)

On two families of iterative methods without memory. - Anna Cima; Armengol Gasull; Víctor Mañosa; Francesc Mañosas (CoRR, 2025)