R. Buczkowski, M. Taczała, and M. Kleiber, “A 16-node locking-free Mindlin plate resting on two-parameter elastic foundation- static and eigenvalue analysis”, Comp. Assist. Methods Eng. Sci., vol. 22, no. 2, pp. 99–114, Jan. 2017, doi: 10.24423/cames.30.