"On the Pairs of Shafts in the Pyramid of Khufu as Means for the Ascent to the Akhet", Journal of the American Research Center in Egypt 56, 2020, 115-141 Luca Miatello

https://www.academia.edu/44680588/_On_the_Pairs_of_Shafts_in_the_Pyramid_of_Khufu_as_Means_for_the_Ascent_to_the_Akhet_Journal_of_the_American_Research_Center_in_Egypt_56_2020_115_141