Search for "percent buried volume" in Full Text gives 3 result(s) in Beilstein Journal of Organic Chemistry.
Beilstein J. Org. Chem. 2018, 14, 2956–2963, doi:10.3762/bjoc.14.275
Beilstein J. Org. Chem. 2015, 11, 2171–2178, doi:10.3762/bjoc.11.235
Beilstein J. Org. Chem. 2010, 6, 1120–1126, doi:10.3762/bjoc.6.128