@incollection{Gusin20,
author = {Pawel Gusin and Andy T. Augousti and Andrzej Radosz},
title = {BH M87: Beyond the Gates of Hell},
booktitle = {Progress in Relativity},
publisher = {IntechOpen},
address = {Rijeka},
year = {2020},
editor = {Calin Gheorghe Buzea and Maricel Agop and Leo Butler},
chapter = {11},
doi = {10.5772/intechopen.90482},
url = {https://doi.org/10.5772/intechopen.90482}
}