- Summing perturbation expansions by means of renormalization group considerationsCzech. J. Phys. 40 (1990) 367 - 392
- EFFECTIVE CHARGES IN QCD: WHERE HAS ALL THE AMBIGUITY GONE?Phys. Rev. D 40 (1989) 676 - 679
- ON SOME ASPECTS OF OPTIMIZATION OF FACTORIZATION SCHEME DEPENDENCE AT THE NEXT-TO-LEADING ORDER IN QCDNucl. Phys. B 321 (1989) 374 - 386
- HARD PROCESSES IN GENERAL FACTORIZATION SCHEMEZ. Phys. C 43 (1989) 431