Kruaehong, T., S. Sujinnapram, P. Udomsamuthirun, T. Nilkamjon, and S. Ratreng. “Effect of precursor of refinement Y211 on the superconductivity and structural of Y257 superconductor”. Indochina Applied Science, vol. 12, no. 3, Sept. 2023, p. 247682, doi:10.55674/jmsae.v12i3.247682.