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Higher order electrotnagnetic radiativf' corrections to neutral current deep inelastic electron proton scattering are studi!"'d in collinear approxim\'ents for small :r and large y."Supported by Bunde~ministnium flir For~dllmg und Tedwologie. 05 -5HH~tlP (8). Bonn. FRG

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String fusion is introduced into the Monte Carlo dual parton model for hadron-nucleus and nucleusnucleus collisions. We find that already the fusion of a small fraction of quark-antiquark chains at present energies leads to a strong increase of antihyperon and antiproton yields at energies reached at the CERN SPS. PACS number(s): 12.38. Mh, 13.85.Hd, 13.85.Ni, 25.75. + I