Behavior of Friedmann-Lemaitre-Robertson-Walker Singularities
  A regularization procedure has been recently suggested for regularizing Big Bang singularities in Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetimes. We argue that this procedure is only appliable to one case of Big Bang singularities and does not affect other types of singularities. 
L. Fern\'andez-Jambrina
gr-qc