Kaveh, A. and Seddighian, M.R. 2021. Optimization of Slope Critical Surfaces Considering Seepage and Seismic Effects Using Finite Element Method and Five Meta-Heuristic Algorithms. Periodica Polytechnica Civil Engineering. 65, 2 (Jan. 2021), 425–436. https://doi.org/10.3311/PPci.17098.