Ahmadov, A.I., S.M. Aslanova, M.Sh. Orujova, S.V. Badalov, and Shi-Hai Dong. “Approximate Bound State Solutions of the Klein-Gordon Equation with the Linear Combination of Hulthén and Yukawa Potentials.”https://doi.org/10.1016/j.physleta.2019.06.043__Physics Letters A 383, no. 24 (2019): 3010–17.https://doi.org/10.1016/j.physleta.2019.06.043 .
LibreCat: /record/19213
DOI: 10.1016/j.physleta.2019.06.043

Schmidt, Wolf Gero, and W.S Verwoerd. “Annihilation of Delocalized Positrons: A Comparison of Diamond and Silicon.”https://doi.org/10.1016/0375-9601(96)00653-6__Physics Letters A 222, no. 4 (1996): 275–80.https://doi.org/10.1016/0375-9601(96)00653-6 .
LibreCat: /record/13788
DOI: 10.1016/0375-9601(96)00653-6