Jouni T. , Pakarinen, и Paatero Erkki Y.O. 2008. Recovery of Manganese from Mixed Metal Solutions by Solvent Extraction With Organophosphorus Acid Extractants. Записки Горного института 174 (март), 145-47. https://pmi.spmi.ru/pmi/article/view/7510.

Jouni T. , Pakarinen, and Paatero Erkki Y.O. 2008. “Recovery of Manganese from Mixed Metal Solutions by Solvent Extraction With Organophosphorus Acid Extractants”. Journal of Mining Institute 174 (March), 145-47. https://pmi.spmi.ru/pmi/article/view/7510.