We present our predictions for the inclusive production of two heavy
quark-antiquark pairs, separated by a large rapidity interval, in the collision
of (quasi-)real photons at the energies of LEP2 and of some future
electron-positron colliders. We include in our calculation the full resummation
of leading logarithms in the center-of-mass energy and a partial resummation of
the next-to-leading logarithms, within the Balitsky-Fadin-Kuraev-Lipatov (BFKL)
approach.Comment: 17 pages, 5 figures, 2 tables; changed some text, removed one figure
and added one reference; version accepted for publication in Phys. Lett.