R. Asih, S. Suprihatin, and S. Sembiring, “The Effect of Sintering Time on the Formation of the BPSCCO-2212 Superconductor Phase at The Levels of Ca=1.10 Using the Wet Mixing Method”, J. Energy Mater. Instrum. Technol., vol. 3, no. 4, pp. 121–126, Nov. 2022.