@inproceedings{inproceedings3bffbc48,
title   = {Energy function for power systems with transmission losses: extension of the invariance principle},
author = {Alberto, Luís Fernando Costa and Rodrigues, Hildebrando Munhoz and Bretas, Newton Geraldo},
year = {2000},
publisher = {COPEL/SIGRE},
booktitle   = {Symposium of Specialists in Electric Operational and Expansion Planning}
}