@article {1634,
	title = {Chiral Piperazines as Efficient Catalysts for the Asymmetric Michael Addition of Aldehydes to Nitroalkenes},
	journal = {Eur. J. Org. Chem.},
	year = {2007},
	pages = {178{\textendash}185},
	author = {M. T. Barros and A. M. Fa{\'\i}sca-Phillips}
}
