If you produce a published work, which uses the sources or binaries of TreeGraph 2 please cite the following paper:
Stöver BC, Müller KF: TreeGraph 2: Combining and visualizing evidence from different phylogenetic analyses. BMC Bioinformatics 2010, 11:7
Wiechers S, Müller KF, Stöver BC: New comparison and annotation methods of the phylogenetic tree editor TreeGraph 2. 5th annual Münster Graduate School of Evolution Symposium; Münster, Germany; 2015
Stöver BC, Wiechers S, Müller KF: Recent development of the phylogenetic tree editor TreeGraph 2. German Conference on Bioinformatics (GCB); Dortmund, Germany; 2015
The master thesis Development and implementation of software components increasing the accessibility of phylogenetic metadata., WWU Münster, 2016 describes the im- and export of BayesTraits data and the selection synchonization feature.
Müller J, Müller K, TreeGraph: automated drawing of complex tree figures using an extensible tree description format. Molecular Ecology Notes 2004, 4:786-788
Please make sure to cite this paper only of you are really using the old command line based version of TreeGraph. If you produce published work based on TreeGraph 2, pleace cite the BMC Bioinformatics paper (which describes TreeGraph 2) instead.