The size and the duration of air-carriage of respiratory droplets and droplet-nuclei. Duguid, J. P. The Journal of Hygiene, 44(6):471–479, September, 1946.
The size and the duration of air-carriage of respiratory droplets and droplet-nuclei [link]Paper  bibtex   
@article{duguid_size_1946,
	title = {The size and the duration of air-carriage of respiratory droplets and droplet-nuclei},
	volume = {44},
	issn = {0022-1724},
	url = {https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2234804/},
	number = {6},
	urldate = {2020-05-19},
	journal = {The Journal of Hygiene},
	author = {Duguid, J. P.},
	month = sep,
	year = {1946},
	pmid = {20475760},
	pmcid = {PMC2234804},
	pages = {471--479},
}
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