1. Ayoubian, A. (2015). Effects of Excavation at Block 37 on Adjacent Freight Tunnels: Performance and Analysis. Ph.D. Thesis submitted to the Graduate School at Northwestern University in partial fulfillment of the requirements for the degree of Doctor of Philosophy.
2. Ayoubian, A., Finno, R. J. (2023). Evaluation of long term loads on freight tunnels in Chicago. Proceedings of the Rapid Excavation and Tunneling Conference, Boston, Massachusetts, pp. 469-481.
3. Bretz, J. H. (1939). Geology of the Chicago Region: Part 1 – General. Illinois State Geologic Survey, Bulletin 65.
4. Bretz, J. H. (1955). Geology of the Chicago Region: Part 2 – Pleistocene. Illinois State Geologic Survey, Bulletin 65.
5. Cho, W., Finno, R.J. (2010). Stress-Strain Response of Block Samples of Compressible Chicago Glacial Clays. Journal of Geotechnical and Geoenvironmental Engineering ASCE 136(1) (2010) 178-188.