Zozaya, Juan (in press/draft proof): \"La Bureba ¿Frontera islamica mediante colonización agraria?\" in Acta Estudiois de frontera 10, Alcalá de la Frontera

The a. studies the presence of Islam in Northern Spain (The "Encartaciones" area, in Burgos Prov), through the never properly explained explained of Arabic place.names. HE advances the theory that it shows a planned system of establishing a frontier following the example of the oriental system of agrarian colonization, like the one used by Umayyads in Irak.