@article{03699522, title = {The continuous Legendre transform, its inverse transform, and applications.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {3}, year = {1980}, pages = {47-67}, doi = {10.1155/S016117128000004X}, zbl = {0447.44001}, language = {en}, url = {http://dml.mathdoc.fr/item/03699522} }
Butzer, Paul L.; Stens, R.L.; Wehrens, M. The continuous Legendre transform, its inverse transform, and applications.. International Journal of Mathematics and Mathematical Sciences, Tome 3 (1980) pp. 47-67. doi : 10.1155/S016117128000004X. http://gdmltest.u-ga.fr/item/03699522/