@article{MTMT:21420571,
	title = {Zeros, quality, and space. trade theory and trade evidence},
	url = {https://m2.mtmt.hu/api/publication/21420571},
	author = {Baldwin, R and Harrigan, R},
	volume = {3},
	unique-id = {21420571},
	year = {2011},
	pages = {60-88}
}