Thomas Siegenthaler Amstein Walthert Kleiner Réjane Forré Generation of Binary Sequences with Controllable Complexity and Ideal r-Tupel Distribution. 15-23 http://link.springer.de/link/service/series/0558/bibs/0304/03040015.htm 1987 EUROCRYPT db/conf/eurocrypt/eurocrypt87.html#SiegenthalerKF87