Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 眞崎 聡,Remarks on global existence of classical solution to multi-dimensional compressible Euler-Poisson equations with geometrical symmetry,RIMS Kokuroku Bessatsu,,,2009,,,,https://cir.nii.ac.jp/crid/1010282256644049280,