1. SIMPLE IONIZATION OF MOLECULAR HYDROGEN BY POSITRON AND ELECTRON IMPACT. Authors: SZ. NAGY, L. NAGY, R.I. CAMPEANU.2. DWBA CALCULATIONS FOR POSITRON IMPACT IONIZATION OF O2. Authors: I.F. TÓTH, R.I. CAMPEANU, VASILE CHIŞ, L. NAGY.3. RESONANCE EFFECTS IN QUANTUM TRANSITIONS INDUCED BY ULTRASHORT LASER PULSES WITH HIGH REPETITION RATE. Authors: S. BORBÉLY, L. NAGY.4. CALCULATED TOTALLY DIFFERENTIAL CROSS SECTIONS FOR THE IONIZATION OF HELIUM BY ELECTRON IMPACT. Authors: A. TÓTH, I. TÓTH, L. NAGY.5. TWO-CENTER EFFECTS IN THE IONIZATION OF HETERONUCLEAR MOLECULES. Authors: L. NAGY.6. CALCULATIONS ON e+ - N2 IONIZATION. Authors: L. NAGY, I. TÓTH, R.I. CAMPEANU.7. CALCULATION OF NUCLEAR STOPPING POWER. Authors: ZS. BÁLINT, L. NAGY.