Search for "pulse-field-gradient spin-echo NMR" in Full Text gives 2 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2016, 12, 97–109, doi:10.3762/bjoc.12.11
Beilstein J. Org. Chem. 2015, 11, 1037–1042, doi:10.3762/bjoc.11.116