1. Beutler G (1992) The 1992 activities of the International GPS Geodynamics Service (IGS). Geodesy and Physics of the Earth, IAG Symposium No. 112, Potsdam, Germany, 5–10 October, in press
2. Beutler G, Bauersima I, Gurtner W, Rothacher M, Schildknecht T, Geiger A (1988) Atmospheric refraction and other important biases in GPS carrier phase observations. Atmospheric Effects on Geodetic Space Measurements, School of Surveying Monograph No. 12, University of New South Wales, Kensington, Australia, pp 15–43
3. DeLoach SR (1989) Continuous deformation monitoring with GPS. Journal of Surveying Engineering 115(1): 93–110
4. Frei E, Beutler G (1990) Rapid static positioning based on the fast ambiguity resolution approach FARA: Theory and first results. Manuscripta Geodaetica 15: 325–356
5. Geiger A (1990) Influence of phase centre variations on the combination of different antenna types. Proceedings of the Second International Symposium on Precise Positioning with the Global Positioning System, Ottawa, Canada, 3–7 September, pp 466–476