File list (Check if you may need any files):
Drucker prager\drucker_prager
..............\..............\DP_init.m
..............\..............\integrator.m
..............\..............\LICENSE.txt
..............\..............\main.m
..............\..............\plane_strain-convergence.eps
..............\..............\plane_strain-ev_es.eps
..............\..............\plane_strain-q_es.eps
..............\..............\plane_strain-stress_strain.eps
..............\..............\README.txt
..............\..............\voigt_norm.m