@Inproceedings{rettinger2012ttthtttotwata, author = "Achim Rettinger and Carolin Michels", booktitle = "Proceedings of the 17th International Conference on Science and Technology Indicators", month = "September", publisher = "to appear", title = "The Tell-Tale Title: How to Track Topics over Time with a Two-Step Approach", year = "2012", }