Cross Sections, Probabilities, Multiplicities and Spectra of Secondaries in High Energy Heavy Ion Interactions

We present a short review of theoretical results (mainly for experimentalists) published in many different papers. The formulae are presented for the different integrated cross sections, the number of interacting nucleons, multiplicities of secondaries, the dispersions of multiplicity distributions. Two possible tests for the search of Quark-Gluon Plasma formation are discussed. CERN SPS data for production of secondaries in central Pb+Pb collisions are compared with Quark-Gluon String Model predictions.