@article{10_4064_ap93_3_8,
     author = {Krzysztof Grelowski},
     title = {Extending {Hardy} fields by non-${\cal C}^{\infty}$-germs},
     journal = {Annales Polonici Mathematici},
     pages = {281--297},
     publisher = {mathdoc},
     volume = {93},
     number = {3},
     year = {2008},
     doi = {10.4064/ap93-3-8},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap93-3-8/}
}