@article{01428712,
title = {Sufficiently rich families of planar rings.},
journal = {Annales Academiae Scientiarum Fennicae. Mathematica},
volume = {24},
year = {1999},
pages = {265-304},
zbl = {0939.20048},
language = {en},
url = {http://dml.mathdoc.fr/item/01428712}
}
Cannon, J.W.; Floyd, W.J.; Parry, W.J. Sufficiently rich families of planar rings.. Annales Academiae Scientiarum Fennicae. Mathematica, Tome 24 (1999) pp. 265-304. http://gdmltest.u-ga.fr/item/01428712/