A. I. Ahmadov, S. M. Aslanova, M. S. Orujova, S. V. Badalov, and S.-H. Dong, “Approximate bound state solutions of the Klein-Gordon equation with the linear combination of Hulthén and Yukawa potentials,” Physics Letters A, vol. 383, no. 24, pp. 3010–3017, 2019.
LibreCat: /record/19213
DOI: 10.1016/j.physleta.2019.06.043

W. G. Schmidt and W. . Verwoerd, “Annihilation of delocalized positrons: a comparison of diamond and silicon,” Physics Letters A, vol. 222, no. 4, pp. 275–280, 1996.
LibreCat: /record/13788
DOI: 10.1016/0375-9601(96)00653-6