2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/177558Manifestation of the nonperturbative effects in hadron processes at high energy is discussed within the instanton liquid model. Their role in high energy diffractive quark-quark scattering, quark form factor and hard exclusive processes with pion participation is illuminated.10 pages, laTex. Talk presented at the Advanced Study Institute "Symmetries and Spin" (Praha-SPIN-2002), Prague, July 2002 Journal Ref: to be published in Czech. J. Phys. 53 (2003)High Energy Physics - Phenomenologytext