@article{JWSP-FD-FB:14c,
  author =	 {J. W. Simpson-Porco and F. D{\"o}rfler and F. Bullo},
  title =	 {Voltage Collapse in Complex Power Grids},
  journal =	{Nature Communications},
  year =	 2016,
  volume =	 7,
  number =	 10790,
  pdf =		 {http://www.control.utoronto.ca/~jwsimpson/papers/2014c.pdf},
  doi =		 {10.1038/ncomms10790},
  keywords =	 {Power Networks},
}