Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Andrzej Krolak,Nature of Singularities in Gravitational Collapse,Progress of theoretical physics = 理論物理学の進歩,0033068X,Kyoto : Publication Office,1999,102,Suppl.136,45-56,https://cir.nii.ac.jp/crid/1522825129723184640,