Marth, A., "Data for Computing the Positions of the Satellites of Jupiter, 1891 with Tables of the Inequalities" and "Ephemeris for Physical Observations of the Moon 1891, September 10 to October 28" from the Monthly Notices of the Royal Astronomical Society, Vol. LI, No. 8, June,, 1891

Marth, A., "Data for Computing the Positions of the Satellites of Jupiter, 1891 with Tables of the Inequalities" and "Ephemeris for Physical Observations of the Moon 1891, September 10 to October 28" from the Monthly Notices of the Royal Astronomical Society, Vol. LI, No. 8, June,, 1891. Georgetown Observatory Collection, GRB-000010. Georgetown University Rare Books , Booth Family Center for Special Collections. https://findingaids.library.georgetown.edu/repositories/14/archival_objects/1163525 Accessed January 11, 2026.