1. P. Kolář, FZU), J. Fischer, FZU)
    Dispersion relations in differential form
    Proc.of the IX Blois Workshop on Elastic and Diffractive Scattering, Pruhonice, Prague, Czech Republic, June 9 - 15, 2001, V. Kundrát, P. Závada (Editors), Institute of Physics AS CR, Prague, Czech Republic, page 305 - 312