Entropy Product Formula for Gravitational Instanton
  We investigate the entropy product formula for various gravitational instantons. We speculate that due to the mass-independent features of the said instantons they are \emph{universal} as well as they are \emph{quantized}. For isolated Euclidean Schwarzschild black hole, these properties simply \emph{fail}. 
Parthapratim Pradhan
gr-qc