@article{MZ_1977__154_172519,
     author = {Judita Cofman},
     title = {On {Ternary} {Rings} of {Derivable} {Planes.}},
     journal = {Mathematische Zeitschrift},
     pages = {157--158},
     publisher = {mathdoc},
     volume = {154},
     year = {1977},
     zbl = {0363.50014},
     url = {http://geodesic.mathdoc.fr/item/MZ_1977__154_172519/}
}