http://www.apfn.org/thewinds/library/khazars.html
http://s155239215.onlinehome.us/turkic/31Alphabet/alphabet_manuscripts_En.htm
http://www.omniglot.com/writing/orkhon.htm
http://www.bibliotecapleyades.net/sociopolitica/esp_sociopol_khazar03.htm
http://en.wikipedia.org/wiki/Old_Turkic_alphabet