JENKINS, J. W. Folner’s Condition for Exponentially Bounded Groups. Mathematica Scandinavica, Berkeley, CA, United States, v. 35, p. 165–174, 1974. DOI: 10.7146/math.scand.a-11544. Disponível em: https://journals.msp.org/mscand/article/view/2101. Acesso em: 25 jul. 2026.