Molina, K.L.C., Sibayan, M.V.G., Guerra, L.J.D. and Sarmago, R.V. 2001. Frequency and applied field dependence of the imaginary part of AC magnetic susceptibility of YBCO. Proceedings of the Samahang Pisika ng Pilipinas, 19(1), SPP-2001-H1A-5. URL: https://proceedings.spp-online.org/article/view/SPP-2001-H1A-5.