http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sách giới thiệu sơ qua phần lí thuyết, đi sâu vào phương pháp giải các bài tập, kiểu dạng bài tập cụ thể
Lê Thị Thiên Hương, Anh Vũ, Nguyễn Anh Tuấn
mathematical analysis - problems, exercises