@article{AFM_2007_32_2_a1,
     author = {Peter Buser and Bruno Scarpellini},
     title = {Undecidable propositions by {ODE's}},
     journal = {Annales Fennici Mathematici},
     pages = {317--340},
     publisher = {mathdoc},
     volume = {32},
     number = {2},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AFM_2007_32_2_a1/}
}