Pizzolato, N.; Maggio, A.; Sciortino, S. (September 2000), "Evolution of X-ray activity of 1-3 Msun late-type stars in early post-main-sequence phases", Astronomy and Astrophysics361: 614–628, Bibcode:2000A&A...361..614P
illinois.edu
stars.astro.illinois.edu
Kaler, James B. “Anwar al Farkadain”. 《Stars》. University of Illinois. 2014년 6월 21일에 확인함.