BOMAN, Jan; LINUSSON, Svante. Examples of Non-Uniqueness for the Combinatorial Radon Transform Modulo the Symmetric Group. Mathematica Scandinavica, Berkeley, CA, United States, v. 78, p. 207–212, 1996. DOI: 10.7146/math.scand.a-12583. Disponível em: https://journals.msp.org/mscand/article/view/1050. Acesso em: 24 jul. 2026.