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. S2CID128691551.
Ivanov, M.; Evtimov, S. (2009-09-03). "1963: The break point of the Northern Hemisphere temperature trend during the twentieth century". International Journal of Climatology. 30 (11): 1738–1746. doi:10.1002/joc.2002. ISSN1680-7316.
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. S2CID128691551.
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. S2CID128691551.
Ivanov, M.; Evtimov, S. (2009-09-03). "1963: The break point of the Northern Hemisphere temperature trend during the twentieth century". International Journal of Climatology. 30 (11): 1738–1746. doi:10.1002/joc.2002. ISSN1680-7316.