A sequential convex programming algorithm for minimizing a sum of Euclidean norms with non-convex constraints
          Trang, L. H.; Kozma, A. ; An, P. T.    ; Diehl, M.  
          
          Optimization Methods and Software, 31 (2016), 187-203  
          http://www.tandfonline.com/doi/abs/10.1080/10556788.2015.1055561?journalCode=goms20  
           
            
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