PITIŞ, Gheorghe. On the topology of Sasakian manifolds. Mathematica Scandinavica, Berkeley, CA, United States, v. 93, n. 1, p. 99–108, 2003. DOI: 10.7146/math.scand.a-14415. Disponível em: https://journals.msp.org/mscand/article/view/804. Acesso em: 24 jul. 2026.