1. Al-Mukhtar, M.: 1995, Macroscopic behavior and microstructural properties of a kaolinite clay under controlled mechanical and hydraulic state, in: Unsaturated Soils: Proc. 1st Int. Conf. on Unsaturated Soils/UNSAT 95, Paris, pp. 3–9.
2. The fabric of a clay soil under controlled mechanical and hydraulic stress states
3. Barrenblatt, G. I.: 1963, On certain boundary value problems for the equation of seepage of liquid in fissured rock, J. Appl. Math. Mech. (translation of the Soviet journal: Prikladnaja Matematika i Mekhanika (PMM)) 27, 513–518
4. Barrenblatt, G. I., Zeltov, I. P. and Kochina, N.: 1960, Basic concepts in the theory of seepage of homogeneous liquids in fissured rocks, J. Appl. Math. Mech. (translation of the Soviet journal: Prikladnaja Matematika i Mekhanika (PMM)) 24(5), 1286–1303.