Ramification of the Gauss map of complete minimal surfaces in R^m on   annular ends
  In this article, we study the ramification of the Gauss map of complete minimal surfaces in R^m on annular ends. This work is a continuation of previous work of Dethloff-Ha. We thus give an improvement of the results on annular ends of complete minimal surfaces of Jin-Ru. 
Gerd Dethloff, Pham Hoang Ha, Pham Duc Thoan
math.DG math.CV