Sabyrbayev, E., Musabekov, K., & Tussupbayev, N. (2014). Surface and flotation properties of the modifying additive butyltriethyltetramine. Chemical Bulletin of Kazakh National University, 73(1), 40-48. https://doi.org/https://doi.org/10.15328/chemb_2014_140-48