Valdis Seglins, Agnese Kukela, Baiba Lazdina (2017). THE STRUCTURE OF THE STEP PYRAMID OF DJOSER IN EGYPT AS A CONCEPT OF PRIMORDIAL HILL. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Informatics, Geoinformatics and Remote Sensing, 761-768. https://doi.org/10.5593/sgem2017/23/s11.095