@article{GDZPPN002224739, title = {Two Notes on Flatness.}, journal = {Manuscripta mathematica}, volume = {39}, year = {1982}, pages = {109-134}, zbl = {0525.13012}, url = {http://dml.mathdoc.fr/item/GDZPPN002224739} }
Herrmann, Manfred; Orbanz, Ulrich. Two Notes on Flatness.. Manuscripta mathematica, Tome 39 (1982) pp. 109-134. http://gdmltest.u-ga.fr/item/GDZPPN002224739/