F. C., Jr. Fekel, J. Tomkin: Secondaries of eclipsing binaries. IV - The triple system Lambda Tauri. In: Astrophysical Journal, Part 1. 263. Jahrgang, Dezember 1982, S.289–301, doi:10.1086/160503, bibcode:1982ApJ...263..289F.
F. C., Jr. Fekel, J. Tomkin: Secondaries of eclipsing binaries. IV - The triple system Lambda Tauri. In: Astrophysical Journal, Part 1. 263. Jahrgang, Dezember 1982, S.289–301, doi:10.1086/160503, bibcode:1982ApJ...263..289F.