@techreport{gyllstrom-tech12, <br>
title={On the Impact of PMU Placement on Observability and 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-2012-001},<br>
year = {2012}
}