@article{CRMATH_2015__353_9_795_0,
     author = {Jard\'on-Kojakhmetov, Hildeberto},
     title = {Formal normal form of $ {A}_{k}$ slow{\textendash}fast systems},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {795--800},
     publisher = {Elsevier},
     volume = {353},
     number = {9},
     year = {2015},
     doi = {10.1016/j.crma.2015.06.009},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2015.06.009/}
}