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Šprajc, I. (2018). "Astronomy, Architecture, and Landscape in Prehispanic Mesoamerica". Journal of Archaeological Research. 26 (2): 197–251. doi:10.1007/s10814-017-9109-z. S2CID149439162.
González-García, A. César; Šprajc, Ivan (2016). "Astronomical significance of architectural orientations in the Maya Lowlands: A statistical approach". Journal of Archaeological Science: Reports. 9: 191–202. Bibcode:2016JArSR...9..191G. doi:10.1016/j.jasrep.2016.07.020.
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Šprajc, Ivan (2018). "Astronomy, Architecture, and Landscape in Prehispanic Mesoamerica". Journal of Archaeological Research. 26 (2): 197–251. doi:10.1007/s10814-017-9109-z. S2CID149439162.
Šprajc, I. (2018). "Astronomy, Architecture, and Landscape in Prehispanic Mesoamerica". Journal of Archaeological Research. 26 (2): 197–251. doi:10.1007/s10814-017-9109-z. S2CID149439162.