Search for "1H-imidazo[1,2-b]pyrazole" in Full Text gives 2 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2017, 13, 1050–1063, doi:10.3762/bjoc.13.104
Beilstein J. Org. Chem. 2014, 10, 2338–2344, doi:10.3762/bjoc.10.243