1. Summing perturbation expansions by means of renormalization group considerations
    Czech. J. Phys. 40 (1990) 367 - 392
  2. EFFECTIVE CHARGES IN QCD: WHERE HAS ALL THE AMBIGUITY GONE?
    Phys. Rev. D 40 (1989) 676 - 679
  3. ON SOME ASPECTS OF OPTIMIZATION OF FACTORIZATION SCHEME DEPENDENCE AT THE NEXT-TO-LEADING ORDER IN QCD
    Nucl. Phys. B 321 (1989) 374 - 386
  4. HARD PROCESSES IN GENERAL FACTORIZATION SCHEME
    Z. Phys. C 43 (1989) 431
  5. LATTICE QCD: WAITING FOR THE ASYMPTOTIC SCALING
    Z. Phys. C 34 (1987) 371 - 374