%0 Journal Article %A Mohammed S. Y. Alsharafi %A Abdu Q. Alameri %T The F-index and coindex of V-phenylenic nanotubes and nanotorus and their molecular complement graphs %J Nanosistemy: fizika, himiâ, matematika %D 2021 %P 263-270 %V 12 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/NANO_2021_12_3_a0/ %G en %F NANO_2021_12_3_a0