Narimani, Samad, Hamid Chakeri, and Seyed Morteza Davarpanah. 2018. “Simple and Non-Linear Regression Techniques Used in Sandy-Clayey Soils to Predict the Pressuremeter Modulus and Limit Pressure: A Case Study of Tabriz Subway”. Periodica Polytechnica Civil Engineering 62 (3):825-39. https://doi.org/10.3311/PPci.12063.