@article {28186,
	title = {Activity analysis for direct-work rate improvement in construction},
	journal = {Journal of Construction Engineering and Management},
	volume = {137},
	year = {2011},
	pages = {1117-1124},
	url = {https://doi.org/10.1061/(ASCE)CO.1943-7862.0000375},
	author = {Michael C Gouett and Carl T Haas and Paul M Goodrum and Carlos H Caldas}
}