Ali Ghodsbin Jahromi and Ehsan Moradi, Study of the Effect of Soil Compaction and Height on Pipe Ovality for Buried Steel Pipe. journal = {International Journal of Aerospace and Mechanical Engineering}, [online]. World Academy of Science, Engineering and Technology. January 2020, vol. 157(1). 43 - 52 [viewed 23 September 2024]. Available from: https://publications.waset.org/pdf/10011027.