On ordinary quantities and W-quantities. Classification and geometrical applications
Compositio Mathematica, Tome 7 (1940), pp. 447-473 
@article{CM_1940__7__447_0,
     author = {Schouten, J. A. and Van Dantzig, D.},
     title = {On ordinary quantities and $W$-quantities. {Classification} and geometrical applications},
     journal = {Compositio Mathematica},
     pages = {447--473},
     year = {1940},
     publisher = {Johnson Reprint Corporation},
     volume = {7},
     mrnumber = {1639},
     zbl = {0022.39902},
     language = {en},
     url = {https://www.numdam.org/item/CM_1940__7__447_0/}
}
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Schouten, J. A.; Van Dantzig, D. On ordinary quantities and $W$-quantities. Classification and geometrical applications. Compositio Mathematica, Tome 7 (1940), pp. 447-473. https://www.numdam.org/item/CM_1940__7__447_0/