@article{MZ_1968__104_170938,
     author = {Donald G. Higman},
     title = {On {Finite} {Affine} {Planes} of {Rank} 3.},
     journal = {Mathematische Zeitschrift},
     pages = {147--149},
     publisher = {mathdoc},
     volume = {104},
     year = {1968},
     zbl = {0162.24202},
     url = {http://geodesic.mathdoc.fr/item/MZ_1968__104_170938/}
}