Eschrig, Helmut. <br/><br/>
Optimized LCAO method and the electronic structure of extended systems.   
by Helmut Eschrig 
 - Berlin  Springer-Verlag  1989 
 - 221p. 
 - Research reports in physics .
<br/><br/><label>ISBN: </label>354050740X 
<br/><br/><label>Dewey Class. No.: </label>539.7  / N89