Cecilia R.C.R.AragonCecilia R.C.R., RaimundR.SeidelRaimundR., Randomized Search Trees - Proc. 30th Symp. Foundations of Computer Science (FOCS 1989), Washington, D.C.: IEEE Computer Society Press, 1989, s. 540–545, DOI: 10.1109/SFCS.1989.63531, ISBN 0-8186-1982-1(ang.).