கேள்வி: சிஃபுவின் விதி - மேலும் படிக்க பற்றி தகவல் சொல்.
பதில்: முதல் நிலை: * George K. Zipf (1949) ''Human Behavior and the Principle of Least Effort''. Addison-Wesley. * George K. Zipf (1935) ''The Psychobiology of Language''. Houghton-Mifflin. (see citations at http://citeseer.ist.psu.edu/context/64879/0 ) இரண்டாம் நிலை: * Lada Adamic. ''Zipf, Power-laws, and Pareto - a ranking tutorial''. http://www.hpl.hp.com/research/idl/papers/ranking/ranking.html * Alexander Gelbukh and Grigori Sidorov (2001) [http://www.gelbukh.com/CV/Publications/2001/CICLing-2001-Zipf.htm "Zipf and Heaps Laws’ Coefficients Depend on Language"]. Proc. CICLing-2001, ''Conference on Intelligent Text Processing and Computational Linguistics'', February 18&ndash;24, 2001, Mexico City. Lecture Notes in Computer Science N 2004, ISSN 0302-9743, , Springer-Verlag: 332&ndash;335. * Damián H. Zanette (2006) "[http://xxx.arxiv.org/abs/cs.CL/0406015 Zipf's law and the creation of musical context,]" ''Musicae Scientiae 10'': 3-18. * Kali R. (2003) "The city as a giant component: a random graph approach to Zipf's law," ''Applied Economics Letters 10'': 717-720(4) * * Axtell, Robert L; [http://www.sciencemag.org/content/293/5536/1818.short Zipf distribution of US firm sizes], Science, 293, 5536, 1818, 2001, American Association for the Advancement of Science * Ramu Chenna, Toby Gibson; [http://www.worldcomp-proceedings.com/proc/p2011/BIC4329.pdf Evaluation of the Suitability of a Zipfian Gap Model for Pairwise Sequence Alignment], International Conference on Bioinformatics Computational Biology: 2011.