http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Lý thuyết automat và ngôn ngữ hình thức/Trịnh Thanh Đèo
Trí tuệ nhân tạo; Ngôn ngữ hình thức (tin học)