Khan, A., A. Rahman, S. Naher, H. Kaneko, Y. Yun, A. Savinkov, H. Suzuki, Y. K. Li, Q. Tao, G. H. Cao, and Z. A. Xu. “The Effect of Cobalt Doping in Structural Phase Transition of SmFe<sub>1-x</sub>Co<sub>x</Sub>AsO Measured by Low-Temperature X-Ray Diffraction”. Journal of Scientific Research, vol. 4, no. 3, Aug. 2012, pp. 541-50, doi:10.3329/jsr.v4i3.10248.