@article{PMIHES_1969__36__23_0,
     author = {Artin, Michael F.},
     title = {Algebraic approximation of structures over complete local rings},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {23--58},
     year = {1969},
     publisher = {Institut des Hautes Etudes Scientifiques},
     volume = {36},
     mrnumber = {268188},
     zbl = {0181.48802},
     language = {en},
     url = {https://www.numdam.org/item/PMIHES_1969__36__23_0/}
}