Mohamed, H.M. et al. 2017. Heteroaromatization with 4-phenyldiazenyl-1-naphthol. Part III: One-pot synthesis and DFT study of 4H-naphthopyran derivatives. European Journal of Chemistry. 8, 4 (Dec. 2017), 358–366. DOI:https://doi.org/10.5155/eurjchem.8.4.358-366.1632.