Aczel, J. <br/><br/>
Functional equations in several variables; with application to mathematics, information theory and to the natural and social sciences 

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 - Cambridge  Cambridge University Press  1989 
 - xiii,462 p.   
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<br/><br/><label>Subjects--Index Terms: </label>Encyclopedia  Encyclopaedia  Functional equations  Partial differential equations  advanced Calculus  Calculus  Mathematics  Number theory  Set theory  Group theory  Mathematical sciences 
<br/><br/><label>Dewey Class. No.: </label>517.965