2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/40301I discuss various QCD tests for multiparticle production, such as multiplicities, dead-cone effect and inclusive spectra. The common feature of all these predictions is the crucial importance of coherence effect to be taken into account.presented at 30th ISMD, Hungary, Oct2000High Energy Physics - Phenomenologytext