http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sách chủ yếu nói về hình học vi phân cổ điển, đường cong, lý thuyết mặt rong; hình học nội bộ của mặt.
Geometry, differential,Hình học vi phân