153
Liu, W., and Schultz, D. R. 1999. Jovian x-ray aurora and energetic oxvgen ion precipitation. Astrophysical Journal 526:538–543.
154
Chen, P. V. 2001. Magnetic field on Jupiter. The Physics fact book,
155
Osorio, M. R. Z. et al. 2000. Discovery of Young, Isolated Planetary Mass Objects in the X֠Orionis Star Cluster. Science 290: 103–106.
156
Lemley, B. 2002. Nuclear Planet. Discover 23(8).
157
158
Dulk, G. A. et al. 1997. Search for Cyclotron-maser Radio Emission from Extrasolar Planets. Abstracts of the 29th Annual Meeting of the Division for Planetary Sciences of the American Astronomical Society, July 28-August 1, 1997, Cambridge, Massachusetts.