1. A perturbed elliptic oscillator: flow inversion through butterfly bifurcations;Abad;Rev. Acad. Cienc. Zaragoza,1989
2. Linear Multistep Schemes based on algebraic, trigonometric and exponential polynomials;Correas,1977
3. Métodos multipaso de coefficientes variables para el P.V.I. 2 especial;Correas,1978
4. Métodos de tipo Störmer-Cowell con coefficientes variables. Applicationes a la integración de movimientos orbitales;Franco,1987
5. Discrete variable methods in ODE's;Henrici,1962