@book{22736,
	author = {Raine, Derek},
	title = {Black holes},
	publisher = {Imperial collebe press},
	year = {1946},
	address = {London},
	edition = {2nd},
	url = {https://libgen.is/book/index.php?md5=E6A2C0C945F58F961CF5CE390D2DBC70}
}