@article{articlec2f9dc73,
title   = {Simple answer to usual questions about unusual forms of Evans´ root locus plot},
author = {Monteiro, Luiz Henrique Alves and Cruz, José Jaime da},
year = {2008},
doi = {10.1590/s0103-17592008000400007},
journal   = {Sba: Controle & Automação Sociedade Brasileira de Automatica}
}