@article{CRMATH_2003__336_3_219_0,
     author = {Luo, Zhuangchu and Chen, Hua and Zhang, Changgui},
     title = {On the summability of the formal solutions for some {PDEs} with irregular singularity},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {219--224},
     publisher = {Elsevier},
     volume = {336},
     number = {3},
     year = {2003},
     doi = {10.1016/S1631-073X(03)00023-2},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1016/S1631-073X(03)00023-2/}
}