Search for "enrichment" in Full Text gives 78 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2010, 6, No. 66, doi:10.3762/bjoc.6.66
Beilstein J. Org. Chem. 2009, 5, No. 59, doi:10.3762/bjoc.5.59
Beilstein J. Org. Chem. 2008, 4, No. 37, doi:10.3762/bjoc.4.37