@article{AIF_2012__62_2_571_0,
     author = {Luo, Zhuangchu and Chen, Hua and Zhang, Changgui},
     title = {Exponential-type {Nagumo} norms and summability of formal solutions of singular partial differential equations},
     journal = {Annales de l'Institut Fourier},
     pages = {571--618},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {62},
     number = {2},
     year = {2012},
     doi = {10.5802/aif.2688},
     zbl = {1252.30025},
     mrnumber = {2985510},
     language = {en},
     url = {http://www.numdam.org/articles/10.5802/aif.2688/}
}