The processes of open and hidden charm production in NN collisions and of
open charm production in γN collisions are studied. The near-threshold
cross section is predicted and polarization phenomena are calculated in frame
of an effective Lagrangian approach.Comment: 10 pages 4 figures, Contribution to XVII International Seminar on
High Energy Physics Problems, Relativistic Nuclear Physics and Quantum
Chromodynamics, Dubna, (Russia) Sept. 27- Oct 2, 200