Williams, Jean-Pierre; Nimmo, Francis (2004). «Thermal evolution of the Martian core: Implications for an early dynamo». Geology32 (2): 97–100. doi:10.1130/g19975.1. Bibcode: 2004Geo....32...97W.
Pollack, James B.; Grossman, Allen S.; Moore, Ronald; Graboske, Harold C. Jr. (1977). «A Calculation of Saturn’s Gravitational Contraction History». Icarus (Academic Press, Inc) 30: 111–128. doi:10.1016/0019-1035(77)90126-9. Bibcode: 1977Icar...30..111P.
Williams, Jean-Pierre; Nimmo, Francis (2004). «Thermal evolution of the Martian core: Implications for an early dynamo». Geology32 (2): 97–100. doi:10.1130/g19975.1. Bibcode: 2004Geo....32...97W.
Pollack, James B.; Grossman, Allen S.; Moore, Ronald; Graboske, Harold C. Jr. (1977). «A Calculation of Saturn’s Gravitational Contraction History». Icarus (Academic Press, Inc) 30: 111–128. doi:10.1016/0019-1035(77)90126-9. Bibcode: 1977Icar...30..111P.