1.Iodine and selenium: Dietary sources and nutritional status of the population of the Kurdistan Region in Northern Iraq
https://www.sciencedirect.com/science/article/pii/S0946672X24001159
2.Trace element concentrations, multivariate analysis and health risk potential of soils from urban and peri-urban agriculture
https://www.gjesm.net/article_713130.html
https://www.gjesm.net/article_713130_f84084c7921547f26fa0870cde927cfd.pdf