@article{article99cc893b,
title   = {Engel subgroups of triangular matrices over local rings},
author = {Dokuchaev, Michael and Kirichenko, Vladimir V. and Polcino Milies, Francisco César},
year = {2005},
doi = {10.1016/j.jalgebra.2004.06.029},
journal   = {Journal of Algebra}
}