@article {32522,
	title = {Biosynthetic Pathways to Nonproteinogenic alpha-Amino Acids},
	journal = {Chemistry Reviews},
	volume = {120},
	year = {2020},
	pages = {3161-3209},
	doi = {10.1021/acs.chemrev.9b00408},
	author = {Hedges, Jason B. and Ryan, Katherine S.}
}
