@article{CM_1972__24_1_1_0,
     author = {Brezuleanu, A.},
     title = {Smoothness and regularity},
     journal = {Compositio Mathematica},
     pages = {1--10},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {24},
     number = {1},
     year = {1972},
     mrnumber = {309932},
     zbl = {0232.14002},
     language = {en},
     url = {http://www.numdam.org/item/CM_1972__24_1_1_0/}
}