Brodal, G. S., Lyngsø, R. B., Östlin, A.
& Pedersen, C. N. S. (2002).
Solving the String Statistics Problem in Time O(n log n). I P. Widmayer, S. Eidenbenz, F. Triguero, R. Morales, R. Conejo & M. Hennessy (red.),
Automata, Languages and Programming: 29th International Colloquium, ICALP 2002 Málaga, Spain, July 8–13, 2002 Proceedings (s. 728-739). Springer.
https://doi.org/10.1007/3-540-45465-9_62