1. J.-H. Choi, H.-C. Eun, H.-S. Park and D.-H. Ahn, JNFCWT, 13, 76 (2015).
2. H.-C. Eun, J.-H. Choi, T.-K. Lee, I.-H. Cho, N.-Y. Kim, J.-U. Yu, H.-S. Park and D.-H. Ahn, JNFCWT, 13, 181 (2015).
3. J.-H. Choi, H.-C. Eun, K.-R. Lee, I.-H. Cho, T.-K. Lee, H.-S. Park and D.-H. Ahn, J. Non-Cryst. Solids,
434, 79 (2016).
4. H.-S. Lee, G.-H. Oh, Y.-S. Lee, I.-T. Kim and J. H. Lee, J. Nucl. Sci. Technol.,
46, 392 (2009).
5. M.T. Harrison, H. E. Simms, A. Jackson and R. G. Lewis, Radiochin. Acta,
96, 295 (2008).