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Leuschner, A. O. (July 1922), "Comparison of Theory with Observation for the Minor planets 10 Hygiea and 175 Andromache with Respect to Perturbations by Jupiter", Proceedings of the National Academy of Sciences of the United States of America, 8 (7): 170–173, Bibcode:1922PNAS....8..170L, doi:10.1073/pnas.8.7.170, PMC1085085, PMID16586868.
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Leuschner, A. O. (April 1936), "The Story of Andromache, an Unruly Planet", Publications of the Astronomical Society of the Pacific, 48 (282): 57–60, Bibcode:1936PASP...48...55L, doi:10.1086/124659.
Leuschner, A. O. (July 1922), "Comparison of Theory with Observation for the Minor planets 10 Hygiea and 175 Andromache with Respect to Perturbations by Jupiter", Proceedings of the National Academy of Sciences of the United States of America, 8 (7): 170–173, Bibcode:1922PNAS....8..170L, doi:10.1073/pnas.8.7.170, PMC1085085, PMID16586868.
Lazzarin, M.; et al. (December 1995), "Visible Spectroscopy of Dark, Primitive Asteroids", Astronomical Journal, 110: 3058–3072, Bibcode:1995AJ....110.3058L, doi:10.1086/117747.
Leuschner, A. O. (July 1922), "Comparison of Theory with Observation for the Minor planets 10 Hygiea and 175 Andromache with Respect to Perturbations by Jupiter", Proceedings of the National Academy of Sciences of the United States of America, 8 (7): 170–173, Bibcode:1922PNAS....8..170L, doi:10.1073/pnas.8.7.170, PMC1085085, PMID16586868.
Leuschner, A. O. (July 1922), "Comparison of Theory with Observation for the Minor planets 10 Hygiea and 175 Andromache with Respect to Perturbations by Jupiter", Proceedings of the National Academy of Sciences of the United States of America, 8 (7): 170–173, Bibcode:1922PNAS....8..170L, doi:10.1073/pnas.8.7.170, PMC1085085, PMID16586868.