@article{JSFS_1959__100__35_0, author = {Vincent, L. A.}, title = {D\'efinition et mesure de la productivit\'e}, journal = {Journal de la Soci\'et\'e de statistique de Paris}, pages = {35--46}, publisher = {Soci\'et\'e de statistique de Paris}, volume = {100}, year = {1959}, language = {fr}, url = {http://archive.numdam.org/item/JSFS_1959__100__35_0/} }