The following bar chart shows the most used keywords of Werner Nutt. These keywords were extracted from research papers written by Werner Nutt calculating the ten most frequent bigrams (i.e., combinations of two words) and ten most frequent trigrams (i.e., combinations of three words) within the 50 most recent articles we found on dblp, a database of computer science literature. Of course, a digram like this does not reflect to 100% what a researcher is researching about, but it provides a rough overview of the topics he or she discusses in the various identified articles.