1. The Aerodrome Design Manual, Part 1 (Aerodrome Design). 2006.
2. Clegg, B.: Impact Soil Tester, viewed 30.4.2015, http://www.clegg.com.au/information_list12.asp.
3. Decký, M., Drusa, M., Pepucha, Ľ., Zgútová, K.: Earth Structures of Transport Constructions. Harlow: Essex: Pearson, pp.180, 2013, ISBN978-1-78399-925-5.
4. STN 72 1010 Determination of earth volume mass. Laboratory and field methods, 1989.
5. STN 72 1012 Laboratory determination of moisture content of soils, 1980.