@proceedings {28197, title = {Rapid tracking of pipe-works progress using digital photogrammetry}, journal = {Proceedings of the 9th Construction Specialty Conference}, year = {2011}, pages = {14-17}, url = {https://scholar.google.ca/scholar?hl=en\&as_sdt=0,5\&cluster=6925103191493667810}, author = {M Ahmed and C Haas and A Shahi and A Aryan and J West and R Haas} }