@book{21310,
	author = {Mueller, Wolfgang||Gehler, Michael||Suppan, Arnold},
	title = {The Revolutions of 1989},
	url = {https://library.oapen.org/bitstream/20.500.12657/46314/1/external_content.pdf||https://library.oapen.org/bitstream/20.500.12657/46314/1/external_content.pdf||https://library.oapen.org/bitstream/20.500.12657/46314/1/external_content.pdf}
}