The following publications are possibly variants of this publication:
- Algebraic Countermeasure to Enhance the Improved Summation Generator with 2-Bit MemoryMd. Iftekhar Salam, Hoon Jae Lee. iacr, 2012:282, 2012. [doi]
- An algebraic attack on the improved summation generator with 2-bit memoryDaewan Han, Moonsik Lee. ipl, 93(1):43-46, 2005. [doi]
- On an improved summation generator with 2-bit memoryHoon Jae Lee, Sang-Jae Moon. sigpro, 80(1):211-217, 2000. [doi]
- On the algebraic attack against summation type keystream generatorsMd. Iftekhar Salam, Hoon Jae Lee. ijics, 5(2):132-149, 2012. [doi]