Further updates to docs to mention GSSI 400MHz antenna model.

docs/source/features.rst

@@ -111,7 +111,7 @@ Fractal correlated noise [TUR1997]_ is used to describe the stochastic distribut
 Library of antenna models
 -------------------------
 
-gprMax now includes Python modules with pre-defined models of antennas that behave similarly to commercial antennas [WAR2011]_. Currently models of antennas similar to `Geophysical Survey Systems, Inc. (GSSI) <http://www.geophysical.com>`_ 1.5 GHz (Model 5100) antenna, and `MALA Geoscience <http://www.malags.com/>`_ 1.2 GHz antenna are included. By taking advantage of Python scripting in input files, using such complex structures in a model is straightforward without having to be built step-by-step by the user. For further details see the :ref:`Python section <python>`.
+gprMax now includes Python modules with pre-defined models of antennas that behave similarly to commercial antennas [WAR2011]_ [STA2017]_. Currently models of antennas similar to `Geophysical Survey Systems, Inc. (GSSI) <http://www.geophysical.com>`_ 1.5 GHz (Model 5100) antenna, and 400 MHz antenna, as well as `MALA Geoscience <http://www.malags.com/>`_ 1.2 GHz antenna are included. By taking advantage of Python scripting in input files, using such complex structures in a model is straightforward without having to be built step-by-step by the user. For further details see the :ref:`Python section <python>`.
 
 Anisotropic materials
 ---------------------
@@ -139,6 +139,3 @@ Open source, robust, file formats
 Alongside improvements to the input file there is a new output file format – `HDF5 <http://www.hdfgroup.org/HDF5/>`_ – to manage the larger and more complex data sets that are being generated. HDF5 is a robust, portable and extensible format with a number of free readers available. For further details see the :ref:`output file section <output>`.
 
 In addition, the `Visualization Toolkit (VTK) <http://www.vtk.org>`_ is being used for improved handling and viewing of the detailed 3D FDTD geometry meshes. The VTK is an open-source system for 3D computer graphics, image processing and visualisation. It also has a number of free readers available including `Paraview <http://www.paraview.org>`_. For further details see the :ref:`geometry view command <geometryview>`.
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docs/source/references.rst

@@ -19,6 +19,7 @@ References
 .. [LUE1994] Luebbers, R., Steich, D., & Kunz, K. (1993). FDTD calculation of scattering from frequency-dependent materials. Antennas and Propagation, IEEE Transactions on, 41(9), 1249-1257. (http://dx.doi.org/10.1109/8.247751)
 .. [MAL1994] Maloney, J. G., Shlager, K. L., & Smith, G. S. (1994). A simple FDTD model for transient excitation of antennas by transmission lines. Antennas and Propagation, IEEE Transactions on, 42(2), 289-292.
 .. [PIE2009] Pieraccini, M., Bicci, A., Mecatti, D., Macaluso, G., & Atzeni, C. (2009). Propagation of large bandwidth microwave signals in water. Antennas and Propagation, IEEE Transactions on, 57(11), 3612-3618. (http://dx.doi.org/10.1109/tap.2009.2025674)
+.. [STA2017] Stadler, S. (2017). A Forward Modeling Study for the Investigation of the Vertical Water-Content Distribution of Using Guided GPR Waves (Master’s Thesis, Freiberg University of Mining and Technology, Germany) (https://app.box.com/s/h2n2ytsdllcm77du1o9lknumngmq8vq8)
 .. [TAF2005] Taflove, A., & Hagness, S. C. (2005). Computational electrodynamics. Artech house.
 .. [TEI1998] Teixeira, F. L., Chew, W. C., Straka, M., Oristaglio, M. L., & Wang, T. (1998). Finite-difference time-domain simulation of ground penetrating radar on dispersive, inhomogeneous, and conductive soils. Geoscience and Remote Sensing, IEEE Transactions on, 36(6), 1928-1937. (http://dx.doi.org/10.1109/36.729364)
 .. [TUR1987] Turcotte, D. L. (1987). A fractal interpretation of topography and geoid spectra on the Earth, Moon, Venus, and Mars. Journal of Geophysical Research: Solid Earth (1978–2012), 92(B4), E597-E601. (http://dx.doi.org/10.1029/jb092ib04p0e597)
@@ -29,4 +30,3 @@ References
 .. [WEN2007b] Weng, W. C., Yang, F., & Elsherbeni, A. Z. (2007). Linear antenna array synthesis using Taguchi's method: A novel optimization technique in electromagnetics. Antennas and Propagation, IEEE Transactions on, 55(3), 723-730.
 .. [WHI2009] Whittow, W. G., & Edwards, R. M. (2009). Effects of averaging procedures for electrical properties at the interface of dissimilar tissues in the human head with finite-difference time-domain modelling. Science, Measurement & Technology, IET, 3(1), 51-58.
 .. [YEE1966] Yee, K. S. (1966). Numerical solution of initial boundary value problems involving Maxwell’s equations in isotropic media. IEEE Trans. Antennas Propag, 14(3), 302-307. (http://dx.doi.org/10.1109/TAP.1966.1138693)
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