D. L. NASCIMENTO; A. L. A. FONSECA. Finding the Ground State Energy for the Helium Atom in a 2D Configuration by Using the Solutions of a Four-spinor Dirac-like Equation. New Frontiers in Physical Science Research Vol. 3, [S. l.], p. 61–80, 2022. DOI: 10.9734/bpi/nfpsr/v3/4304A. Disponível em: https://stm.bookpi.org/NFPSR-V3/article/view/8589. Acesso em: 12 jun. 2026.