Borowski, Stanley K. (March 1996). Comparison of Fusion/Antiproton Propulsion systems. 23rd Joint Propulsion Conference. NASA Glenn Research Center. doi:10.2514/6.1987-1814. hdl:2060/19960020441.
Jablonski, David; Chaloner, William Gilbert; Lawton, John Hartley; May, Robert McCredie (April 29, 1994). "Extinctions in the fossil record". Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences. 344 (1307): 11–17. doi:10.1098/rstb.1994.0045.
Borowski, Stanley K. (March 1996). Comparison of Fusion/Antiproton Propulsion systems. 23rd Joint Propulsion Conference. NASA Glenn Research Center. doi:10.2514/6.1987-1814. hdl:2060/19960020441.
"Ask A Physicist: Sun". Cosmic Helospheric Learning Center. August 16, 2000. Archived from the original on August 16, 2000. Retrieved February 23, 2022.
Jablonski, David; Chaloner, William Gilbert; Lawton, John Hartley; May, Robert McCredie (April 29, 1994). "Extinctions in the fossil record". Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences. 344 (1307): 11–17. doi:10.1098/rstb.1994.0045.
"Ask A Physicist: Sun". Cosmic Helospheric Learning Center. August 16, 2000. Archived from the original on August 16, 2000. Retrieved February 23, 2022.