Ali, T. E.-S., Ibrahim, M. A., El-Gohary, N. M., & El‐Kazak, A. M. (2013). 3-Formylchromones as diverse building blocks in heterocycles synthesis. European Journal of Chemistry, 4(3), 311–328. https://doi.org/10.5155/eurjchem.4.3.311-328.815