For citations:

Alsharafi M.S., Alameri A.Q. The F-index and coindex of V-Phenylenic Nanotubes and Nanotorus and their molecular complement graphs. Nanosystems: Physics, Chemistry, Mathematics. 2021;12(3):263-270. https://doi.org/10.17586/2220-8054-2021-12-3-263-270