@article{CMH_1969__44_139392,
     author = {Joseph Johnson},
     title = {A {Notion} of {Krull} {Dimension} for {Differential} {Rings.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {207--216},
     publisher = {mathdoc},
     volume = {44},
     year = {1969},
     zbl = {0179.34401},
     url = {http://geodesic.mathdoc.fr/item/CMH_1969__44_139392/}
}