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author = {Georg P{\'{o}}lya},  title = {{Vom Lösen Mathematischer Aufgaben}},  }  @inproceedings{Chen:2013:LMP:2540128.2540426,  author = {Chen, Zhiyuan and Mukherjee, Arjun and Liu, Bing and Hsu, Meichun and Castellanos, Malu and Ghosh, Riddhiman},  title = {{Leveraging Multi-domain Prior Knowledge in Topic Models}},  booktitle = {Proceedings of the Twenty-Third International Joint Conference on Artificial Intelligence},  series = {IJCAI '13},  year = {2013},  isbn = {978-1-57735-633-2},  location = {Beijing, China},  pages = {2071--2077},  numpages = {7},  url = {http://dl.acm.org/citation.cfm?id=2540128.2540426},  acmid = {2540426},  publisher = {AAAI Press},  }