@article{articlef9476ca5,
title   = {Stability region bifurcations of nonlinear autonomous dynamical systems: type-zero saddle-node bifurcations},
author = {Amaral, Fabíolo Moraes and Alberto, Luís Fernando Costa},
year = {2011},
doi = {10.1002/rnc.1605},
journal   = {International Journal of Robust and Nonlinear Control}
}