González-García, A. César, and Ivan Šprajc, 2016. Astronomical significance of architectural orientations in the Maya Lowlands: A statistical approach. Journal of Archaeological Science: Reports 9: 191-202. Ivan Šprajc A. Cesar Gonzalez-Garcia

https://www.academia.edu/27499598/Gonz%C3%A1lez_Garc%C3%ADa_A_C%C3%A9sar_and_Ivan_%C5%A0prajc_2016_Astronomical_significance_of_architectural_orientations_in_the_Maya_Lowlands_A_statistical_approach_Journal_of_Archaeological_Science_Reports_9_191_202&nav_from=60293eb0-15b6-454b-806c-c10cfc2de8e3&rw_pos=0