Michael Hoskin and Colleagues, Studies in Iberian Archaeoastronomy (8):  

• Orientations of Magalithic and Tholos Tombs of Portugal and Southwest Spain, Archaeoastronomy
• Supplement to Journal for the History of Astronomy, Cambridge (Agosto 2001)

Fernando Pimenta, Luís Tirapicos and Nuno Ribeiro:

• Lunar and solar connections at a rock art site in central Portugal, Actas SEAC 2005 (no prelo)