Aczél, J. <br/><br/>
Functional equations in several variables/ 
J. Aczél, J. Dhombres. 
 - Cambridge, UK:  New York:  Cambridge University Press,  1989. 
 - xiii, 462 p.:  ill.;  25 cm. 
 - Encyclopedia of mathematics and its applications;  v. 31 .
<br/><br/> Includes indexes. 
<br/><br/>Bibliography: p. [388]-448. 
<br/><br/><label>ISBN: </label>0521352762 
<br/><br/><label>LCCN: </label>87038107 
<br/><br/><label>Nat. Bib. No.: </label>GB88-7773 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Functional equations.<br/>Functions of several real variables.<br/>Equations de fonctions.
<br/><br/><label>Dewey Class. No.: </label>515.84