GARDING, Lars. Limit Theorems for Certain Random Walks. Mathematica Scandinavica, Berkeley, CA, United States, v. 9, p. 395–408, 1961. DOI: 10.7146/math.scand.a-10644. Disponível em: https://journals.msp.org/mscand/article/view/2701. Acesso em: 25 jul. 2026.