Duffin, Richard J. <br/><br/>
Geometric programming  Theory and application 
by Richard J. Duffin, Elmor L. Peterson, Clarence Zener 
 - New york  John-Wiley and sons,  1967 
 - xi, 278p. 
<br/><br/><label>Dewey Class. No.: </label>519.7  / N672