Add references about geodetic coordinate conversion.

docs/source/refs.bib

@@ -487,6 +487,16 @@ @inproceedings{moritz1984
   url       = {https://office.iag-aig.org/doc/5d7f91ee333a3.pdf}
 }
 
+@book{noureldin2013,
+  author    = {Noureldin, Aboelmagd and Karamat, Tashfeen B. and Georgy, Jacques},
+  title     = {Fundamentals of Inertial Navigation, Satellite-based Position and their Integration},
+  year      = {2013},
+  edition   = {1},
+  publisher = {Springer Berlin, Heidelberg},
+  isbn      = {978-3-642-30465-1},
+  doi       = {10.1007/978-3-642-30466-8_1}
+}
+
 @techreport{ozyagcilar2015,
   author      = {Ozyagcilar, Talat},
   title       = {Implementing a Tilt-Compensated eCompass using Accelerometer and Magnetometer Sensors},
@@ -800,6 +810,21 @@ @misc{Wiki_SLERP
   note         = {Accessed: 2020-06-12}
 }
 
+@misc{Wiki_GCC_geo2rect,
+  author       = {Wikipedia},
+  title        = {From geodetic to ECEF coordinates},
+  howpublished = {\url{https://en.wikipedia.org/wiki/Geographic_coordinate_conversion#From_geodetic_to_ECEF_coordinates}},
+  year         = {Accessed: 2024-11-15}
+}
+
+@misc{ESA_Coord_Conv,
+  author       = {Zornoza and M. Hernández-Pajares},
+  title        = {Ellipsoidal and Cartesian Coordinates Conversion},
+  howpublished = {\url{https://gssc.esa.int/navipedia/index.php/Ellipsoidal_and_Cartesian_Coordinates_Conversion}},
+  institution  = {Technical University of Catalonia},
+  year         = {2011}
+}
+
 @misc{Wiki_Conversions,
   author       = {Wikipedia},
   title        = {Conversion between quaternions and Euler angles},