ALBRECHT, Ulrich. A-Whitehead groups. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 60, n. 1, p. 19–29, 2015. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5654. Acesso em: 19 apr. 2025.