1. Jungseok Memorial Library (https://lib.inha.ac.kr/eng/about/intro)

2. ACS Publications (https://pubs.acs.org)

3. Vienna Ab initio Simulation Package (VASP) (https://www.vasp.at)

4. Nature Publications (https://www.nature.com/siteindex)

5.The Royal Society of Chemistry (RSC) Publications (https://pubs.rsc.org)

6. Science (https://science.sciencemag.org)

7. Elsevier (https://www.elsevier.com)

8. The American Physical Society (APS) (https://www.aps.org/publications/index.cfm)