ORĂȘEAN, Olga Hilda, et al. “OPTICAL PROPERTIES AND MICROSTRUCTURAL CHANGES OF HARD DENTAL TISSUES IN GASTRO-ESOPHAGEAL REFLUX DISEASE PATIENTS”. Studia Universitatis Babeș-Bolyai Chemia, vol. 62, no. 3, Sept. 2017, pp. 215-23, doi:10.24193/subbchem.2017.3.18.