@unpublished{Yin2008,
  author  = {Huicheng Yin},
  title   = {Formation and construction of a shock wave for 3-D compressible Euler equations with spherical initial data},
  institution = {Institut f{\"u}r Mathematik},
  series    = {Preprint},
  number    = {(2002) 07},
  year    = {2008},
}