Charmed mesons fragmentation functions.

Fragmentation functions for heavy-light mesons, like the charmed D, D* mesons, are proposed. They rest on next-to-leading QCD perturbative fragmentation functions Tor heavy quarks. with the addition of a nonperturbative term describing phenomenologically the quark --> meson transition. The cross section for production of large p(T) D, D* mesons al the: Fermilab Tevatron is evaluated in this framework.