Caballar, R.C.F. and Galapon, E.A. 2007. Eigenvalues and eigenfunctions of a class of integral operators. Proceedings of the Samahang Pisika ng Pilipinas, 25(1), SPP-2007-PA-32. URL: https://proceedings.spp-online.org/article/view/SPP-2007-PA-32.