http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Kiến thức đại cương về đại số cao cấp: tập hợp và quan hệ, nửa nhóm và nhóm, vành và trường, vành đa thức, vành chỉnh và vành ơlit, đa thức trên trường số
Algebra, abstract,Algebraic fields,Combinations,Group theory