@misc{indiciae09b36315415c,
  title = {Trapped surfaces and spherical closed cosmologies.},
  author = {E Malec and Ó Murchadha N},
  year = {1993},
  doi = {10.1103/physrevd.47.1454},
  url = {https://pubmed.ncbi.nlm.nih.gov/10015723/},
  note = {Source identifier: 10015723}
}