POLETAEVA, E. Penrose’s tensors on supergrassmannians. MATHEMATICA SCANDINAVICA, [S. l.], v. 72, p. 161–190, 1993. DOI: 10.7146/math.scand.a-12443. Disponível em: https://www.mscand.dk/article/view/12443. Acesso em: 5 may. 2024.