Zen, M. T.; Hadikusumo, Djajadi (December 1964). "Preliminary report on the 1963 eruption of Mt.Agung in Bali (Indonesia)". Bulletin Volcanologique. 27 (1). The SAO/NASA Astrophysics Data System: 269–299. Bibcode:1964BVol...27..269Z. doi:10.1007/BF02597526.
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"Geology of Mt.Agung". Pusat Vulkanologi & Mitigasi Bencana Geologi — VSI. Archived from the original on 29 September 2008. Retrieved 26 April 2009.
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Zen, M. T.; Hadikusumo, Djajadi (December 1964). "Preliminary report on the 1963 eruption of Mt.Agung in Bali (Indonesia)". Bulletin Volcanologique. 27 (1). The SAO/NASA Astrophysics Data System: 269–299. Bibcode:1964BVol...27..269Z. doi:10.1007/BF02597526.