Waldschmidt,Michel <br/><br/>
Dipophantine Approximation on Linear Algebraic Groups  Transcendence Properties of the Exponential Function in Several Variables 
/by Michel Waldschmidt 
 - London:  Springer;  1991. 
 - 633p. 
<br/><br/><label>ISBN: </label>3540667857 
<br/><br/><label>Dewey Class. No.: </label>512.7  / WAL/D