@article{AUPO_2000__39_1_a3,
     author = {Draessler, Jan},
     title = {The nonlinear periodic second order boundary value problem},
     journal = {Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica},
     pages = {51--66},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {2000},
     mrnumber = {1826352},
     zbl = {1040.34021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AUPO_2000__39_1_a3/}
}