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APA Citation
Guo, W., Hao, H., Jin, S., Su, Q., Li, H., Hu, X., Gan, Y., Qin, L., Gao, W., & Liu, G. (2017). preparation and infrared to visible upconversion luminescence of Yb2O3:Ho3+ nanocrystalline powders. Ceramics international, 43(5), 4330–4334. http://access.bl.uk/ark:/81055/vdc_100040373362.0x000026