@article{VSGTU_2013_4_a13,
     author = {V. A. Berezin},
     title = {Before getting around to do black hole physics...},
     journal = {Journal of Samara State Technical University, Ser. Physical and Mathematical Sciences},
     pages = {138--172},
     publisher = {mathdoc},
     number = {4},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/VSGTU_2013_4_a13/}
}