@article{ITA_1997__31_1_67_0,
     author = {Ruohonen, Keijo},
     title = {Undecidable event detection problems for {ODEs} of dimension one and two},
     journal = {RAIRO - Theoretical Informatics and Applications - Informatique Th\'eorique et Applications},
     pages = {67--79},
     publisher = {EDP-Sciences},
     volume = {31},
     number = {1},
     year = {1997},
     mrnumber = {1460457},
     zbl = {0878.68062},
     language = {en},
     url = {http://archive.numdam.org/item/ITA_1997__31_1_67_0/}
}