@article{GDZPPN002369818,
title = {Note on equivalent transformations},
journal = {Mathematische Zeitschrift},
volume = {28},
year = {1928},
pages = {453-455},
zbl = {53.0668.05},
url = {http://dml.mathdoc.fr/item/GDZPPN002369818}
}
Field, P. Note on equivalent transformations. Mathematische Zeitschrift, Tome 28 (1928) pp. 453-455. http://gdmltest.u-ga.fr/item/GDZPPN002369818/