@booksection {Freund1336_2016,
	year = {2016},
	author = {Freund, Jan A.},
	bookTitle = {Lecture Notes in Physics},
	pages = {179-192},
	doi = {10.1007/bfb0105609},
	ISBN = {http://id.crossref.org/isbn/978-3-540-62893-4},
	URL = {http://dx.doi.org/10.1007/bfb0105609}
}