ZBOROWSKI, G. Construction of an A-manifold on a principal torus bundle. Annales Universitatis Paedagogicae Cracoviensis Studia Mathematica, [S. l.], v. 12, p. 5–19, 2013. Disponível em: https://studmath.uken.krakow.pl/article/view/13174. Acesso em: 31 oct. 2026.