1. Stress distribution in dry and in saturated sand above a yielding trap-door;Terzaghi,1936
2. Theoretical soil mechanics;Terzaghi,1943
3. Marston A. The Theory of External Loads on Closed Conduits in the Light of the Latest Experiments. Bulletin 96. Ames (Iowa): Iowa Engineering Experiment Station; 1930.
4. The theory of loads on pipes in ditches and tests of cement and clay drain tile and sewer pipe;Marston,1913
5. Protection of underground structures by arch action associated with the imperfect ditch method of construction;Spangler,1964