Search for "crossover reaction" in Full Text gives 4 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2018, 14, 1039–1045, doi:10.3762/bjoc.14.91
Beilstein J. Org. Chem. 2015, 11, 2476–2486, doi:10.3762/bjoc.11.269
Beilstein J. Org. Chem. 2010, 6, No. 59, doi:10.3762/bjoc.6.59
Beilstein J. Org. Chem. 2009, 5, No. 1, doi:10.3762/bjoc.5.1