• Oxalic acid regeneration of ceramic filter medium used in the dewatering of iron ore : research articleSalmimies, Riina; Kallas, Juha; Ekberg, Bjarne; Häkkinen, AnttiInternational scholary research netrwork (ISRN) : chemical engineering2012 / Article ID 921873 [6] p. : ill https://onlinelibrary.wiley.com/doi/10.5402/2012/921873