@article{GDZPPN002374668, title = {A matrix theory of measurement.}, journal = {Mathematische Zeitschrift}, volume = {37}, year = {1933}, pages = {542-555}, zbl = {0007.25203}, url = {http://dml.mathdoc.fr/item/GDZPPN002374668} }
Copeland, A.H. A matrix theory of measurement.. Mathematische Zeitschrift, Tome 37 (1933) pp. 542-555. http://gdmltest.u-ga.fr/item/GDZPPN002374668/