Amparo Fúster-SabaterPino Caballero-GilCryptanalytic Attack on Cryptographic Sequence Generators: The Class of Clock-Controlled Shrinking Generators.668-6792008ICCSA (2)https://doi.org/10.1007/978-3-540-69848-7_54conf/iccsa/2008-2db/conf/iccsa/iccsa2008-2.html#Fuster-SabaterC08