[Processing technology of calcined Magnetitum based on concept of QbD and its XRD characteristic spectra]. - Zeng DW; Zhou JW; He TX; Chen YM; Xu HH; Feng J; Yang Y; Chen X; Zou JL; Chen L; Chen HP; Chen SL; et al. (Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2025)