Isoperimetric regions in rotationally symmetric convex bodies Cesar Rosales 53C4249Q20Isoperimetric problemisoperimetric regionsconstant mean curvature hypersurfacesstability Indiana University Mathematics Journal 2003 text pdf 10.1512/iumj.2003.52.2320 10.1512/iumj.2003.52.2320 en Indiana Univ. Math. J. 52 (2003) 1201 - 1214 state-of-the-art mathematics http://iumj.org/access/