McDonald, G.D.; Whited, L.J.; DeRuiter, C.; Khare, B.N.; Patnaik, A.; Sagan, C. (1996). "Production and chemical analysis of cometary ice tholins". Icarus. Quyển 122 số 1. tr. 107–117. Bibcode:1996Icar..122..107M. doi:10.1006/icar.1996.0112.
McDonald, G.D.; Whited, L.J.; DeRuiter, C.; Khare, B.N.; Patnaik, A.; Sagan, C. (1996). "Production and chemical analysis of cometary ice tholins". Icarus. Quyển 122 số 1. tr. 107–117. Bibcode:1996Icar..122..107M. doi:10.1006/icar.1996.0112.