(en) Saul J. Adelman, « On the possible variability of the main sequence A stars theta Virginis and 109 Virginis », Astronomy & Astrophysics Supplement Series, vol. 125, , p. 497–499 (DOI10.1051/aas:1997105, Bibcode1997A&AS..125..497A)
(en) Saul J. Adelman, « On the possible variability of the main sequence A stars theta Virginis and 109 Virginis », Astronomy & Astrophysics Supplement Series, vol. 125, , p. 497–499 (DOI10.1051/aas:1997105, Bibcode1997A&AS..125..497A)
(en) G. Scholz, H. Lehmann, G. Hildebrandtet al., « Spectroscopic and photometric investigations of MAIA candidate stars », Astronomy and Astrophysics, vol. 337, , p. 447–459 (Bibcode1998A&A...337..447S)