Jamshidian Ghale Sefidi, M., Shirmohammad, F., & Mehri, M. "Effect of dietary inclusion of sulphate, hydroxychloride and organic complex sources of manganese on egg quality of aged laying hens", Iranian Journal of animal Science, 50, 2, 2019, 131-141. doi: 10.22059/ijas.2019.276506.653688