Grothendieck, Alexander. <br/><br/>
Lecture Notes in Mathematics: The Tame Fundamental Group of a Formal Neighbourhood of a Dovisor with Normal Crossings on a Scheme /  

 - 1st ed /  
 - Berlin 33 :   Springer-Verlag ,   1980 
 - p.133 :  
<br/><br/><label>ISBN: </label>3-540-05499-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Dewey Class. No.: </label>B25  / L1