@article{articlee15679ba,
title   = {Saddle-node index as bounding value for Hopf bifurcations detection},
author = {Souza, Antonio Carlos Zambroni de and Lopes, B. I. Lima and Guedes, Renato Braga de Lima and Bretas, Newton Geraldo and Martins, André Christovão Pio and Mello, L. F.},
year = {2005},
doi = {10.1049/ip-gtd:20045225},
journal   = {IEE Proceedings - Generation, Transmission and Distribution}
}