PERSSON, Jan. Distribution differential equations. Regularization and bending of a rod. Mathematica Scandinavica, Berkeley, CA, United States, v. 66, p. 291–300, 1990. DOI: 10.7146/math.scand.a-12312. Disponível em: https://journals.msp.org/mscand/article/view/1312. Acesso em: 24 jul. 2026.