Kairbekov Z, Eshova Z, Ryabikin Y. Study of the paramagnetic properties of brown coal of the Кiyaktinsk deposit. Chemical Bulletin of Kazakh National University [Internet]. 30Mar.2011 [cited 6May2024];61(1):209-14. Available from: https://bulletin.chemistry.kz/index.php/kaznu/article/view/897