@article{EXMATH_1989__4_1_38289,
     author = {D. Arcoya},
     title = {Periodic solutions of hamiltonians systems with strong resonance at infinity.},
     journal = {Extracta Mathematicae},
     pages = {33},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1989},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/EXMATH_1989__4_1_38289/}
}