Sahin, L., O. S. Cevik, D. D. Koyuncu, and S. Kocahan. “Caffeine As a Potential Arousal Enhancer: Altered NMDA Subunit Gene Expression Without Improving Cognitive Performance in REM Sleep Deprived Rats”. Cellular and Molecular Biology, vol. 65, no. 2, Feb. 2019, pp. 63-68, doi:10.14715/cmb/2019.65.2.10.