Ancient Arab footprints in the astronomy of Western Sahara. Outcomes of project Amanar Andrea Rodríguez-Antón Congreso
Astronomical Significance of orienations ofearly ceremonial complexes in the Gulf coast region of Mexico A. César González-García e Ivan Sprajc Congreso
The apprehension of time andspace among the Celts: the study of the orientations of sancturies and sacred spaces Marco Virgilio García Quintela y A. César González-García Congreso