THEORETICAL EXACT CALCULATION OF THE GROUNDSTATE ENERGIES OF TWO ELECTRON INTERACTION IN 1D FOUR SITES SYSTEM. The Journals of the Nigerian Association of Mathematical Physics, [S. l.], v. 65, p. 199 – 206, 2023. Disponível em: https://nampjournals.org.ng/index.php/home/article/view/55.. Acesso em: 6 jul. 2024.