The Theory of Proportionality as an Abstraction of Group Theory.
Büchi, J.B. ; Wright, J.B.
Mathematische Annalen, Tome 129 (1955), p. 102-108 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1955-01-01
EUDML-ID : urn:eudml:doc:160454 
@article{GDZPPN002284634,
     title = {The Theory of Proportionality as an Abstraction of Group Theory.},
     journal = {Mathematische Annalen},
     volume = {129},
     year = {1955},
     pages = {102-108},
     zbl = {0065.00902},
     url = {http://dml.mathdoc.fr/item/GDZPPN002284634}
}

Büchi, J.B.; Wright, J.B. The Theory of Proportionality as an Abstraction of Group Theory.. Mathematische Annalen, Tome 129 (1955) pp. 102-108. http://gdmltest.u-ga.fr/item/GDZPPN002284634/