Thực đơn
Thời_kỳ_Trì_trệThực đơn
Thời_kỳ_Trì_trệLiên quan
Tài liệu tham khảo
WikiPedia: Thời_kỳ_Trì_trệ http://www.xm2.be/CRIMINAL/ment/page_32.html http://www.britannica.com http://www.springerlink.com/content/8343j641546501... http://www.springerlink.com/content/y1222042887866... http://www.unlv.edu/centers/cdclv/archives/article... http://yalepress.yale.edu/yupbooks/sakharov/images... http://yalepress.yale.edu/yupbooks/sakharov/images... http://www.zakon.kz/our/news/news.asp?id=30047710 http://kodeks.name/ http://www.nber.org/papers/w4735