@article{ELMA_1996__51_3_141601,
     author = {R.C. Powers and T. Riedel},
     title = {On a {Model} of {Plane} {Geometry.}},
     journal = {Elemente der Mathematik},
     pages = {171--175},
     publisher = {mathdoc},
     volume = {51},
     number = {3},
     year = {1996},
     zbl = {0896.51011},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1996__51_3_141601/}
}