This paper gives a short survey on planar functions and commu-tative semifields and considers a possible extension of CCZ-equivalence which isthe most general known equivalence relation of functions preserving the planarproperty.
@article{64, title = {Planar functions and commutative semifields}, journal = {Tatra Mountains Mathematical Publications}, volume = {45}, year = {2010}, doi = {10.2478/tatra.v45i0.64}, language = {EN}, url = {http://dml.mathdoc.fr/item/64} }
Budaghyan, Lilya; Helleseth, Tor. Planar functions and commutative semifields. Tatra Mountains Mathematical Publications, Tome 45 (2010) . doi : 10.2478/tatra.v45i0.64. http://gdmltest.u-ga.fr/item/64/