@inproceedings{TUW-205616, author = {Hanbury, Allan and Bhatti, Naeem and Lupu, Mihai and Moerzinger, Roland}, title = {Patent Image Retrieval: A Survey}, booktitle = {Proc. of PaIR}, year = {2011}, pages = {3--8}, publisher = {ACM}, doi = {10.1145/2064975.2064979} }