Results of the first North American comparison of absolute gravimeters, NACAG-2010 - Schmerge, David; Francis, Olvier; Henton, J.; Ingles, D.; Jones, D.; Kennedy, Jeffrey; Krauterbluth, K.; Liard, J.; Newell, D.; Sands, R.; Schiel, J.; Silliker, J.; et al. (Journal of Geodesy, 2012)