TY - GEN AU - Mitch Trachtenberg C2 - Grant/Contract Reports (NISTGCR), National Institute of Standards and Technology, Gaithersburg, MD DA - 2012-01-05 LA - en PB - Grant/Contract Reports (NISTGCR), National Institute of Standards and Technology, Gaithersburg, MD PY - 2012 TI - Development of Appropriate Test Markings for Optical Scan Voting Machines, Phase 2: Analysis of Ballot Markings ER -