Yacoub, Amal M., et al. “Accumulation of Heavy Metals in Tilapia Fish Species and Related Histopathological Changes in Muscles, Gills and Liver of Oreochromis Niloticus Occurring in the Area of Qahr El-Bahr, Lake Al-Manzalah, Egypt”. Oceanological and Hydrobiological Studies, vol. 50, no. 1, Mar. 2021, pp. 1-15, https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/6010.