@article{MM2_1991__73_1_155653,
     author = {Katsumi Nomizu and Takeshi Sasaki},
     title = {A new model of unimodular-affinely homogeneous surfaces.},
     journal = {Manuscripta mathematica},
     pages = {39--44},
     publisher = {mathdoc},
     volume = {73},
     number = {1},
     year = {1991},
     zbl = {0753.53008},
     url = {http://geodesic.mathdoc.fr/item/MM2_1991__73_1_155653/}
}