Geometric Algorithms for Minimal Enclosing Discs in Strictly Convex   Normed Planes
  With the geometric background provided by Alonso, Martini, and Spirova on the location of circumcenters of triangles in normed planes, we show the validity of the Elzinga--Hearn algorithm and the Shamos--Hoey algorithm for solving the minimal enclosing disk problem in strictly convex normed planes. 
Thomas Jahn
math.MG cs.CG