Gekeler E.-U. <br/><br/>
Drinfeld modular curves. 
Gekeler E.-U. 
 - Berlin et al  Springer-Verlag  1986 
 - 121 p. 
<br/><br/> MicroFiche. Lecture Notes in Mathematics, Vol.1231 
<br/><br/><label>Dewey Class. No.: </label>512.7