@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},
     publisher = {Johnson Reprint Corporation},
     volume = {7},
     year = {1940},
     mrnumber = {1639},
     zbl = {0022.39902},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1940__7__447_0/}
}