1.

On the entropy associated with the interior of a black hole
/ Zhang, Baocheng
The investigation about the volume of a black hole is closely related to the quantum nature of the black hole. [...]
Published in Physics letters B (2017)
10.1016/j.physletb.2017.09.035
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2.

Infinite volume of noncommutative black hole wrapped by finite surface
/ Zhang, Baocheng ; You, Li
The volume of a black hole under noncommutative spacetime background is found to be infinite, in contradiction with the surface area of a black hole, or its Bekenstein–Hawking (BH) entropy, which is wellknown to be finite. [...]
Published in Physics letters B (2016)
10.1016/j.physletb.2016.12.027
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3.

Thermodynamics of Acoustic Black Holes in Two Dimensions
/ Zhang, Baocheng
It is wellknown that the thermal Hawkinglike radiation can be emitted from the acoustic horizon, but the thermodynamiclike understanding for acoustic black holes was rarely made. [...]
Published in Advances in High Energy Physics 2016 (2016) 5710625
10.1155/2016/5710625
arXiv:1606.00693
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