@article{10_4064_am_27_1_113_126,
     author = {Marek Bodnar and Urszula Fory\'s},
     title = {Periodic dynamics in a model of immune system},
     journal = {Applicationes Mathematicae},
     pages = {113--126},
     publisher = {mathdoc},
     volume = {27},
     number = {1},
     year = {2000},
     doi = {10.4064/am-27-1-113-126},
     zbl = {1007.34067},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-27-1-113-126/}
}