S. Nagula, and Prof. Dr. Ing. J. Grabe. “Hypoplastic Model with Intergranular Strain: Dependence on Grain Properties and Initial State”. Geotechnical Engineering Journal of the SEAGS & AGSSEA, vol. 51, no. 4, Oct. 2024, pp. 122-9, doi:10.14456/seagj.2020.25.