Lavrentʹev, M. A.  1900-1980. <br/><br/>
Variational methods, for boundary value problems, for systems of elliptic equations.  / 
Authorized translation from the Russian. Edited by J.R.M. Radok. 
 - Groningen :  Noordhoff ;  [1963] 
 - 150 p. :  illus. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations.<br/>Conformal mapping.<br/>Boundary value problems.<br/>Fluid dynamics.
<br/><br/><label>Dewey Class. No.: </label>515.35  / LAV