OTTESEN, I. On the Borel cohomology of free loop spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 93, n. 2, p. 185–220, 2003. DOI: 10.7146/math.scand.a-14419. Disponível em: https://www.mscand.dk/article/view/14419. Acesso em: 2 may. 2024.