Sun, L. L., Y. Li, S. S. Li, X. J. Wu, B. Z. Hu, and Y. Chang. “Identification and Characterisation of DfCHS, a Chalcone Synthase Gene Regulated by Temperature and Ultraviolet in Dryopteris Fragrans”. Cellular and Molecular Biology, vol. 60, no. 6, Dec. 2014, pp. 1-7, https://mail.cellmolbiol.org/index.php/CMB/article/view/489.