2[4]A Short Biography of Alfred James Lotka,prepared by the National Institue of Standards and Technology.http://www.nist.gov/dads/HTML/lotkaslaw.html.
4[6]Carston,R.Informativeness,Relevance and Scalar Implicature[A].Relevance Theory:Applications and Implications[C].Ed.R.Carston & S.Uchida.Amsterdam:John Benjamins,1998.179-236.
5[7]Catriona T.and J.R.Hurford.Modelling Zipfian Distributions in Language.(paper presented at the Language Evolution and Computation Workshop/Course at the 15th European Summer School on Logic,Language and Information,Vienna,Auguast 2003.from http://www.ling.ed.ac.uk/～jim.)
6[8]Grice,H.P.Logic and Conversation[A].Syntax and Semantics 3:Speech Acts[C].Ed.P.Cole & J.Morgan.New York:Academic Press,1975.41-58.
7[9]Grice,H.P.Further Notes on Logic and Conversation[A].Syntax and Semantics 9:Pragmatics[C].Ed.P.Cole.New York:Academic Press,1978.113-128.
8[10]Hanley,M.L.Word Index to James Joyce's Ulysses[M].Madison,Wis,1937.
9[11]Horn,L.R.Toward a New Taxonomy for Pragmatic Inference:Q-based and R-based Implicature[A].Meaning,Form,and Use in Context:Linguistic Applications[C].Ed.D.Schiffrin.Washington,D.C.:Georgetown University Press,1984.11-42.
10[12]Ha,L.Q.,E.I.Sicilia-Garcia.J.Ming. and F.J.Smith.Extension of Zipf's Law to Words and Phrases.In Proceedings of the 19th International Conference on Computational Linguistics,2003,(1):315-320.
