One way to try to get a handle on what's happening in a scientific field is to study citations in research papers. n a visualization of a complex network with many links, however, it can be very difficult to recognize significant patterns amid the clutter
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I. Nikolova, G. Angelova, D. Tcharaktchiev, and S. Boytcheva. Proceedings of the 21th International Conference on Conceptual Structures (ICCS 2013), volume 7735 of Lecture Notes in Computer Science, page 106-120. Springer, (2013)