@inproceedings{TUW-219270, author = {B{\"o}hm, Johannes and Malkin, Zinovy and Lambert, Sebastien and Ma, Chopo}, title = {Challenges and Perspectives for TRF and CRF Determination}, booktitle = {IVS 2012 General Meeting Proceedings}, year = {2012}, editor = {Behrend, Dirk and Baver, Karen}, pages = {309--313}, organization = {NASA/CP 2012-217504}, publisher = {International VLBI Service} }