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@article{Authenticus:P-00R-ZGP,
	title = {{Directed technical change and environmental quality}},
	author = {O Afonso and L Fonseca and M Magalhaes and PB Vasconcelos},
	doi = {10.1007/s10258-020-00174-4},
	journal = {Portuguese Economic Journal},
	number = {1},
	pages = {71-97},
	publisher = {Springer Heidelberg},
	type = {Article},
	volume = {20},
	year = {2021}
}