@article {28215,
	title = {Analysis of observed skill affinity patterns and motivation for multiskilling among craft workers in the US industrial construction sector},
	journal = {Journal of construction engineering and management},
	volume = {135},
	year = {2009},
	pages = {999-1008},
	url = {https://doi.org/10.1061/(ASCE)CO.1943-7862.0000072},
	author = {Yinggang Wang and Paul M Goodrum and Carl T Haas and Robert W Glover}
}