@article { BPCS14a, title = {Preface to Special Issue on EG Workshop on 3D Object Retrieval 2013}, journal = {Springer Visual Computer}, number = {30}, pages = {1195}, year = {2014}, author = {Biasotti, Silvia and Pratikakis, Ioannis and Castellani, U. and Schreck, Tobias} }