@article {324112,
	title = {Syst. 4, Cur. Post. 71. 1827.},
	year = {1827},
	keywords = {Brahms},
	author = {Spreng.}
}
@article {323881,
	title = {Syst. 4, Cur. Post. 72. 1827.},
	year = {1827},
	keywords = {Brahms},
	author = {Spreng. and Spreng.}
}
