Naumovich, A., O. Iliev, F. Gaspar, F. Lisbona, and P. Vabishchevich. “On Numerical Solution of 1D Poroelasticity Equations in a Multilayered Domain”. Mathematical Modelling and Analysis, vol. 10, no. 3, Sept. 2005, pp. 287-04, doi:10.3846/13926292.2005.9637288.