1. Ghilani, C. and Wolf, P. (2015). Elementary surveying. Upper Saddle Riwer, NJ: Pearson Education.
2. Choudry, M. and Rizos, C. (2015). Precise Point Positioning from Combined GPS, GLONASS and BeiDou. [online] Ignss.org. Available at: http://www.ignss.org/LinkClick.aspx?fileticket=imr1ARBZ%2B5U%3D&tabid=151&mid=565 [Accessed 17 Jun. 2016].
3. Kabir, M., Song, M., Sung, N., Chung, S., Kim, Y., Noguchi, N. and Hong, S. (2016). Performance comparison of single and multi-GNSS receivers under agricultural fields in Korea. Engineering in Agriculture, Environment and Food, [online] 9(1), pp.27-35. Available at: http://dx.doi.org/10.1016/j.eaef.2015.09.002 [Accessed 14 Apr. 2016].
4. Hesselbarth, A. and Wanninger, L. (2010). Performance of GNSS-PPP in Post-Processing Mode. [online] Tu-dresden.de. Available at: https://tu-dresden.de/bu/umwelt/geo/gi/gg/ressourcen/dateien/veroeffentlichungen/hesselbarth_hydro2010.pdf?lang=en [Accessed 19 Jun. 2016].
5. Wisniewski, B., Bruniecki, K. and Moszynski, M. (2013). Evaluation of RTKLIB's Positioning Accuracy Using low-cost GNSS Receiver and ASG-EUPOS. TransNav, 7(2), pp.79-85.
6. Takasu, T. (2013). RTKLIB: Documents. [online] Rtklib.com. Available at: http://www.rtklib.com/rtklib_document.htm [Accessed 13 Apr. 2016].