Olson, R. J. M.; Pasachoff, J. M. (1992). "The 1816 Solar Eclipse and the Comet 1811I in Linnell's Astronomical Album". Journal for the History of Astronomy. 23: 121. Bibcode:1992JHA....23..121O. doi:10.1177/002182869202300204.
Olson, R. J. M.; Pasachoff, J. M. (1992). "The 1816 Solar Eclipse and the Comet 1811I in Linnell's Astronomical Album". Journal for the History of Astronomy. 23: 121. Bibcode:1992JHA....23..121O. doi:10.1177/002182869202300204.