WECHULI, W. B.; LINTURI, J. M.; KARIUKI, P. K. Positron impact elastic scattering by calcium atom using first order distorted wave born approximation with a complex potential. African Journal of Pure and Applied Sciences, Nairobi, Kenya, v. 3, n. 1, p. 177–184, 2022. Disponível em: https://journal.ku.ac.ke/index.php/AJPAS/article/view/261. Acesso em: 12 feb. 2025.