@book{42848,
	author = {Villiger, Mark Eugen.},
	title = {Commentary on the 1969 Vienna Convention on the Law of Treaties  /},
	publisher = {Martinus Nijhoff Publishers,},
	year = {2009.},
	series = {Nijhoff eBook titles 2009},
	address = {Boston :},
	url = {http://dx.doi.org/10.1163/ej.9789004168046.i-1058}
}