When using TagPies please cite:
Jänicke, S., Blumenstein, J., Rücker, M., Zeckzer, D., & Scheuermann, G. (2018). TagPies: Comparative Visualization of Textual Data. In VISIGRAPP (3: IVAPP) (pp. 40-51). PDF-preprint

Maximum Number of Tags: 100 200 300 400 500 750 1000      Maximum Word Distance: 1 2 3 4 5 6 7 8 9 10      Stopword list: none EN DE DA ES