1. NEW [4.4.4.4]CYCLOPHANE AS IONOPHORE FOR ION-SELECTIVE ELECTRODES. Authors: LIDIA VARVARI, IONEL CĂTĂLIN POPESCU, SORIN-AUREL DORNEANU.2. POTASSIUM-SELECTIVE ELECTRODE BASED ON A CALIX[6]ARENIC ESTER (C6ES6). Authors: LIDIA VARVARI, SORIN-AUREL DORNEANU, IONEL CĂTĂLIN POPESCU.3. KINETIC INVESTIGATION IN TROLOX-DPPH• SYSTEM. Authors: ADRIAN NICOARǍ, GABRIELLA SZABÓ, LIDIA VARVARI.