Influence of Ca doping on the superconductivity of Y1-xCaxBa2Cu3O7-d - Wan Shaaidi, Wan Nurul Ain; Mansor, M. K.; Lim, Kean Pah; Matori, Khamirul Amin; Saion, Elias; Shaari, Abdul Halim; Chen, Soo Kien (Malaysian Solid State Science and Technology Society, 2011)