http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Hawkinh đã viết lại những chặn đường gian nan, để đưa ra một lý thuyết khả dĩ nhất, và được xem là ứng viên duy nhất cho lý thuyết hoàn chỉnh về vũ trụ, lý thuyết - M, ...
Stephen Hawking, Leonard Mlodinow ; Phạm Văn Thiều, Tô Bá Hạ (dịch)
Lý thuyết trường thống nhất,Unified field theories