1. Human Behavior and the Principle of Least Effort;Zipf,1949
2. Informational aspects of visual perception;Attneave;Psychol. Rev.,1954
3. Sensory mechanism, the reduction of redundancy, and intelligence;Barlow,1959
4. Unsupervised learning;Barlow;Neural Comput.,1989
5. Finding minimum entropy codes;Barlow;Neural Comput.,1989