Publications

  1. E. Panjaitan, D. Herdiwijaya, Photographic Observation of Visual Double Stars, Astron. Astrophys, Suppl. Ser, 88, p.63-72, 1991
  2. D. Herdiwijaya, M. Makita, B. Anwar, The Proper Motion of Individual Sunspot, Publ. Soc. Astron. Japan, 49, p. 235-248, 1997
  3. D. Herdiwijaya, B. Indradjaja, Fraktal dan Variabilitas dalam Siklus Bintik Matahari, Kontribusi Fisika Indonesia, 13 (2), p. 72-75, 2002
  4. D. Herdiwijaya, S. Imelda, The Probability of Flare Occurrences Based on Sunspot Group and Magnetic Configurations, Journal of Mathematics and Science, 11 (2), p. 37-43 , 2006