1. FLAME ATOMIC EMISSION QUANTIFICATION OF LITHIUM IN NATURAL WATERS USING THE METHANEAIR FLAME AS AN ALTERNATIVE EXCITATION SOURCE. Authors: LADISLAU KÉKEDY-NAGY.2. FLAME ATOMIC EMISSION DETERMINATION OF STRONTIUM IN FLOTATION TAILINGS USING THE METHANE-AIR FLAME AS EXCITATION SOURCE. Authors: LADISLAU KÉKEDY-NAGY, FRENŢIU TIBERIU, ANA-MARIA RUSU, MICHAELA PONTA, EMIL CORDOŞ.3. FLAME ATOMIC EMISSION SPECTROMETRY DETERMINATION OF CESIUM IN MINERAL AND WELL WATERS USING A METHANE-AIR FLAME. Authors: LADISLAU KÉKEDY-NAGY, EUGEN DARVASI.4. PHOTOMETRIC DETERMINATION OF BIURET IN MELTED UREA USING FLOW INJECTION ANALYSIS. Authors: FRENŢIU TIBERIU, MICHAELA PONTA, EUGEN DARVASI, LADISLAU KÉKEDY-NAGY, IOAN MĂRGINEAN, EMIL A. CORDOŞ.5. FLAME ATOMIC EMISSION DETERMINATION OF POTASSIUM IN NATURAL WATERS WITH THE METHANE-AIR FLAME AS EXCITATION SOURCE. Authors: LADISLAU KÉKEDY-NAGY, EMIL A. CORDOŞ.6. FLAME ATOMIC ABSORPTION DETERMINATION OF ZINC IN NATURAL WATERS USING THE METHANE - AIR FLAME. Authors: LADISLAU KÉKEDY-NAGY, EMIL A. CORDOŞ.7. FLAME ATOMIC EMISSION SPECTROMETRIC DETERMINATION OF BARIUM USING THE METHANE - AIR FLAME. OPTIMIZATION OF THE FLAME AND INSTRUMENTAL PARAMETERS. Authors: LADISLAU KÉKEDY-NAGY, EMIL A. CORDOŞ.8. OPTIMIZATION OF THE FLAME ATOMIC EMISSION DETERMINATION OF MAGNESIUM IN THE METHANE - AIR FLAME. Authors: LADISLAU KÉKEDY-NAGY, EMIL A. CORDOŞ.9. FLAME ATOMIC EMISSION DETERMINATION OF CALCIUM IN NATURAL WATERS USING THE METHANE-AIR FLAME. Authors: LADISLAU KÉKEDY-NAGY, EMIL A. CORDOŞ.10. DETERMINATION OF CADMIUM IN ENVIRONMENTAL SAMPLES USING THE METHANE - AIR FLAME ATOMIC ABSORPTION SPECTROMETRY. Authors: LADISLAU KÉKEDY-NAGY, JÓZSEF SZŰCS-BALÁZS.11. RED PEPPER POWDER COLOR MEASUREMENT BY USING AN INTEGRATING SPHERE AND DIGITAL IMAGE PROCESSING. Authors: EUGEN DARVASI, LADISLAU KÉKEDY-NAGY.12. EVALUATION OF A RURAL SETTLEMENT WELL WATERS BASED ON THE QUANTIFICATION OF SOME PHYSICAL AND CHEMICAL PARAMETERS. A CASE STUDY. Authors: GYÖNGYI PETŐ, LADISLAU KÉKEDY-NAGY.13. QUANTIFICATION OF CESIUM TRACES IN NATURAL SAMPLES BY FAES TECHNIQUE USING Pt-LOOP AS SAMPLE INTRODUCTION DEVICE INTO THE METHANE-AIR FLAME. Authors: LADISLAU KÉKEDY-NAGY, ANDREEA-REBEKA ZSIGMOND.14. A STATISTICAL APPROACH TO THE MINERAL WATERS OF TRANSYLVANIAN BASIN-EASTERN CARPATHIANS BOUNDARY. Authors: LADISLAU KÉKEDY-NAGY, CĂLIN BACIU, BOGLÁRKA-MERCEDESZ KIS.