1. Anagnostopoulos, C.A., Tzetzis, D., Berketis, K.: Shear strength behaviour of polypropylene fibre reinforced cohesive soils. Geomech. Geoeng. 9(3), 241–251 (2014). https://doi.org/10.1080/17486025.2013.804213
2. B. of Indian Standards IS 2720-10 (1991): Methods of test for soils, Part 10: Determination of unconfined compressive strength.”
3. B. of Indian Standards IS 2720-3-1 (1980): Methods of test for soils, Part 3: Determination of specific gravity, Section 1: Fine grained soils.”
4. B. of Indian Standards IS 2720-39-1 (1977): Methods of test for soils, Part 39: Direct shear test for soils containing gravel, Section 1: Laboratory test.”
5. B. of Indian Standards IS 2720-5 (1985): Methods of test for soils, Part 5: Determination of liquid and plastic limit.”