↑Mac Dowall, D. W. (2007). "Chapter Four. Numismatic evidence for a chronological framework for pre-Kaniskan art,from Kalchayan to Gandhara". In On the Cusp of an Era. Leiden, The Netherlands: Brill. doi:10.1163/ej.9789004154513.i-548.26.{{cite book}}: AS1-onderhoud: gebruik authors-parameter (link)
↑Stegemann, H. (1998). "Chapter Seven The Essenes". In The Library of Qumran. Leiden, The Netherlands: Brill. doi:10.1163/9789004677128_008.{{cite book}}: AS1-onderhoud: gebruik authors-parameter (link)