1. Retired, Univ. of Maine.
2. Retired, Associate Professor, Dept. of Engineering Technology and Surveying Engineering, New Mexico State Univ. (NMSU) Emeritus Faculty, New Mexico State Univ. (NMSU), Las Cruces, NM 88003-8001; President, Global COGO, Inc., P.O. Box 3162, Las Cruces, NM 88003. ORCID: .
3. Professor Emeritus, Surveying Engineering, Ferris State Univ., Big Rapids, MI 49307.
4. Retired; formerly, National Geodetic Survey (NGS), National Oceanic and Atmospheric Administration (NOAA), 3510 Flowerfield Dr., Potomac, MD 20854. ORCID: .
5. Ch2MHill Professor of Civil Engineering, School of Civil and Construction Engineering, Oregon State Univ., Corvallis, OR 97331. ORCID: .
6. Professor, Dept. of Cartographic Engineering, Geodesy, and Photogrammetry, Universitat Politècnica de València, València 46022, Spain (corresponding author). ORCID: .