@article{04040237, title = {Typically real functions and typically real derivatives.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {10}, year = {1987}, pages = {491-494}, doi = {10.1155/S0161171287000577}, zbl = {0638.30012}, language = {en}, url = {http://dml.mathdoc.fr/item/04040237} }
Trimble, S.Y. Typically real functions and typically real derivatives.. International Journal of Mathematics and Mathematical Sciences, Tome 10 (1987) pp. 491-494. doi : 10.1155/S0161171287000577. http://gdmltest.u-ga.fr/item/04040237/