[1] M. Paterson N. Pippenger A. Schonhage:
Finding the median. Journal of Computer and System Sciences 13 (1976), 184-199.
MR 0428794
[2] Chee, Keng Yap: New Lower Bounds for Median and Related Problems. Yale University, Department of Computer Science, Research Report No. 79, 1976.
[3] A. V. Aho J. E. Hopcroft J. D. Ullman:
The Design and Analysis of Computer Algorithms. Addison-Wesley Publishing Company, 1974.
MR 0413592