LOKTEV, V. M.; TURKOWSKI, V. M. Green function of fermions in 2D superconducting Frohlich model with inhomogeneous order parameter. ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР, Харків, Україна, v. 26, n. 2, p. 135–141, 2000. DOI: 10.1063/1.593871. Disponível em: https://fnt.ilt.kharkov.ua/index.php/fnt/article/view/f26-0135e. Acesso em: 4 трав. 2024.