1. According to the Article 9 Paragraph 2 on Law on State Surveying and Cadastre of Immovable Property (National Gazette, No 128/99).
2. Hofmann-Wellenhof, B.; Moritz, H.; Physical Geodesy, Springer, 2006, ISBN-13: 978-3211335444.
3. Torge, W.; Müller, M.; Geodesy, New York: deGruyter, 2012, ISBN-13: 978-3110207187.
4. Yang, Q.; Snyder, J.;, Waldo Tobler, W.; Map Projection Transformation: Principles and Applications, CRC Press, 1999, ISBN-13: 978-0748406685.
5. Haluk Ozener, H. at al; WEGENER: World Earthquake GEodesy Network for Environmental Hazard Research (Original Research Article), Journal of Geodynamics, Volume 67, 2013, Pages 2-12 .