@techreport{gyllstrom-tech11, <br>
title={Max Observability PMU Placement with Cross-Validation},<br>
author = {Daniel Gyllstrom, Elisha Rosensweig, and Jim Kurose },<br>
institution = {Department of Computer Science, University of Massachusetts Amherst},<br>
number = {UM-CS-2011-14},<br>
year = {2011}
}