Estructuras, dispositivos y estrategias defensivas de las sociedades humanas

Bilal Sarr writes on early Islamic history, particularly the formation of Al-Ándalus. His book, "Los precintos de la conquista omeya y la formación de Al-Ándalus," offers a detailed look at the Umayyad conquest and its lasting impact.

Manuel Espinar Moreno writes about human societies and their defensive structures. His work, including "Estructuras, dispositivos y estrategias defensivas de las sociedades humanas," explores historical and strategic aspects of defense.