Magdalino 2003, Paul Stephenson, "The Balkan Frontier in the Year 1000", p. 112: "The Escorial Taktikon (or Taktikon Oikonomides), the modern name given to a precedence list drawn up in Constantinople between 975 and 979..." Magdalino, Paul, ed. (2003). Byzantium in the Year 1000. Leiden, The Netherlands: Brill. ISBN90-04-12097-1.
Laiou & Simon 1994, Paul Magdalino, "Justice and Finance in the Byzantine State", p. 104: "It is also worth noting that the Escorial Taktikon of 975 lists a number of judicial offices––thesmophylax, kensor, mystographos, exaktor, hypatos––which must have been created in or soon after the reign of Romanos." Laiou, Angeliki E.; Simon, Dieter (1994). Law and Society in Byzantium, 9th-12th Centuries. Washington, District of Columbia: Dumbarton Oaks. ISBN0-88402-222-6.