1. COMPUTER SIMULATION OF A CZERNY TURNER MOUNT MONOCHROMATOR. Authors: ALPAR SIMON, SORIN DAN ANGHEL, FRENĊ˘IU TIBERIU, EUGEN DARVASI, ZSOLT VISKI.2. EFFECT OF ANNEALING ON THE PROPERTIES AND STRUCTURE OF THE 2212 SYSTEM. Authors: SORIN DAN ANGHEL, FRENĊ˘IU TIBERIU, B. REIZ, G. BORODI, S. SIMON, ALPAR SIMON.3. ROTATIONAL TEMPERATURES OF THE OH BAND IN A VERY LOW RF POWER CAPACITIVELY COUPLED PLASMA. Authors: ALPAR SIMON, SORIN DAN ANGHEL, S. SIMON, T. FRENŢIU, ERNA CZIRJAK, EMIL CORDOĊ.4. DETERMINATION OF ELECTRICAL PARAMETERS OF CCP AT ATMOSPHERIC PRESSURE. Authors: SORIN DAN ANGHEL.5. OPERATING STABILITY DIAGRAM FOR THE PLASMA NEEDLE. Authors: ALPAR SIMON, SORIN DAN ANGHEL.