The affine plane AG(2,q), q odd, has a unique one point extension.
Thas, J.A.
Inventiones mathematicae, Tome 115 (1994), p. 133-140 / Harvested from Göttinger Digitalisierungszentrum
Access to full text
Publié le : 1994-01-01
EUDML-ID : urn:eudml:doc:144232 
@article{GDZPPN002112256,
     title = {The affine plane AG(2,q), q odd, has a unique one point extension.},
     journal = {Inventiones mathematicae},
     volume = {115},
     year = {1994},
     pages = {133-140},
     zbl = {0814.51002},
     url = {http://dml.mathdoc.fr/item/GDZPPN002112256}
}

Thas, J.A. The affine plane AG(2,q), q odd, has a unique one point extension.. Inventiones mathematicae, Tome 115 (1994) pp. 133-140. http://gdmltest.u-ga.fr/item/GDZPPN002112256/