@article{CRMATH_2005__341_2_97_0,
     author = {Arkady Poliakovsky},
     title = {A method for establishing upper bounds for singular perturbation problems},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {97--102},
     publisher = {Elsevier},
     volume = {341},
     number = {2},
     year = {2005},
     doi = {10.1016/j.crma.2005.06.009},
     language = {en},
}