1. Alber C, Ware R, Rocken C, Braun J (2000) Obtaining single path phase delays from GPS double differences. Geophys Res Lett 27:2661–2664. doi: 10.1029/2000GL011525
2. Altamini Z, Collilieux X, Métivier L (2011) ITRF2008: an improved solution of the international terrestrial reference frame. J Geod 85:457–473. doi: 10.1007/s00190-011-0444-4
3. Bar-Sever YE, Haines B, Wu S, Lemoine F, Willis P (2009) Geodetic reference antenna in space (GRASP): a mission to enhance the terrestrial reference frame. In: COSPAR colloquium: scientific and fundamental aspects of the Galileo program, Padua
4. Beutler G, Baueršíma I, Gurtner W, Rothacher M, Schildknecht T, Geiger A (1988). Atmospheric refraction and other important biases in GPS carrier phase observations. In: Atmospheric effects on geodetic space measurements, monograph 12. School of Surveying, University of New South Wales, Kensington, pp 15–43
5. Böhm J, Werl B, Schuh H (2006) Troposphere mapping functions for GPS and VLBI from European Centre for medium-range weather forecasts operational analysis data. J Geophy Res 111(B2). doi: 10.1029/2005JB003629