@book{2991,
	author = {Yin, Robert K.},
	title = {Applications of case study research},
	publisher = {SAGE},
	year = {2012},
	address = {Los Angeles, Calif.},
	edition = {3rd edition},
	url = {https://toc.library.ethz.ch/objects/pdf/z01_978-1-4129-8916-9_01.pdf}
}