http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Nguyên lý hoạt động và ứng dụng thực tiễn =,Electric machines and transformers
Peter F. Ryff, David Platnick and Joseph A. Karnas ; Lê Ngọc Cương biên dịch
electric machinery,electric transformers