TY - JOUR AU - D. Arcoya TI - Periodic solutions of hamiltonians systems with strong resonance at infinity. JO - Extracta Mathematicae PY - 1989 SP - 33 VL - 4 IS - 1 PB - mathdoc UR - https://geodesic-test.mathdoc.fr/item/EXMATH_1989__4_1_38289/ LA - en ID - EXMATH_1989__4_1_38289 ER -