Efficient coal concentration using a short-chain amine-type compound as collector reagent: Flotation and optimization studies. Indian Journal of Chemical Technology (IJCT), [S. l.], v. 30, n. 1, p. 103–110, 2023. DOI: 10.56042/ijct.v30i1.63358. Disponível em: https://or.niscpr.res.in/index.php/IJCT/article/view/1254. Acesso em: 15 may. 2026.