1. M. Brown. A partial analysis of random height-balanced trees. SIAM Journal on Computing, 8(1):33–41, February 1979.
2. Ricardo A. Baeza-Yates, Gaston H. Gonnet, and Nivio Ziviani. Expected behaviour analysis of AVL trees. To appear, 1989.
3. Helen Cameron and Derick Wood. Unbalanced AVL trees and space pessimal brother trees. Research Report CS-89-20, University of Waterloo, 1989.
4. Donald E. Knuth. The Art of Computer Programming, Vol. 3: Sorting and Searching. Addison-Wesley, Reading, MA, 1973.
5. Rolf Klein and Derick Wood. On the space cost of brother trees or: How unbalanced can an AVL tree be? See also Knuth, Vol. 3, page 470, Exercise 3, 1987.