References 5.7 References and Suggested Readings
[1]
G. Golub and F. Uhlig, The QR algorithm: 50 years later its genesis by John Francis and Vera Kublanovskaya and subsequent developments, IMA J. of Numerical Analysis (2009)
[2]
R. Tanase, R. Radu, PageRank Algorithm - The Mathematics of Google Search
[3]
A. Townsend, The QR algorithm, a thorough illustration of the QR algorithm with plenty of python code.