Sinwittayarak, S., Sujinnapram, S., Nilkamjon, T., Ratreng, .S., Udomsamuthirun, P., Meakniti, S. and Kruaehong, T. 2024. Effect of the AgO2 doping on the superconducting material of YAgxBa2Cu3O7-δ, Y3AgxBa5Cu8O18- δ and Y7AgxBa11Cu18O40-δ . Science Essence Journal. 40, 1 (May 2024), 61–73.