@article{MZ_1979__169_172878,
     author = {Claudio Bartolone and Fabio Di Franco},
     title = {A {Remark} on the {Projectivities} of the {Projective} {Line} over a {Commutative} {Ring.}},
     journal = {Mathematische Zeitschrift},
     pages = {23--30},
     publisher = {mathdoc},
     volume = {169},
     year = {1979},
     zbl = {0413.51006},
     url = {http://geodesic.mathdoc.fr/item/MZ_1979__169_172878/}
}