SALMA, N. Proper Actions of Certain Nilpotent Affine Groups with Codimension One Orbits. Journal of Scientific Research, [S. l.], v. 4, n. 2, p. 315, 2012. DOI: 10.3329/jsr.v4i2.7889. Disponível em: https://banglajol.info/index.php/JSR/article/view/7889. Acesso em: 22 may. 2022.