M. Mahdi and N. Shariatmadari, Construction Procedures Evaluation of Three Adjacent Tunnels and Excavation Step Effects. journal = {International Journal of Civil and Environmental Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2014, vol. 85(1). 86 - 90 [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/9997484.