Jouni T. , P. и Erkki Y.O. , P. (2008) "Recovery of Manganese from Mixed Metal Solutions by Solvent Extraction With Organophosphorus Acid Extractants", Записки Горного института, 174, сс. 145-147. доступно на: https://pmi.spmi.ru/pmi/article/view/7510 (просмотрено: 5 декабрь 2025).

Jouni T. , P. and Erkki Y.O. , P. (2008) "Recovery of Manganese from Mixed Metal Solutions by Solvent Extraction With Organophosphorus Acid Extractants", Journal of Mining Institute, 174, pp. 145-147. Available at: https://pmi.spmi.ru/pmi/article/view/7510 (Accessed: 5 December 2025).