@article{SD_1968-1969__22_2_A3_0,
     author = {Scott, David B.},
     title = {The covariant systems of {Todd} and {Segre}},
     journal = {S\'eminaire Albert Ch\^atelet et Paul Dubreil},
     note = {talk:15},
     pages = {1--10},
     year = {1968-1969},
     publisher = {Secr\'etariat math\'ematique},
     volume = {22},
     number = {2},
     zbl = {0216.05802},
     language = {en},
     url = {https://www.numdam.org/item/SD_1968-1969__22_2_A3_0/}
}