Flexible Ambiguity Resolution and Incompleteness Detection in Requirements Descriptions via an Indicator-based Configuration of Text Analysis Pipelines
F. Bäumer, M. Geierhos, in: Proceedings of the 51st Hawaii International Conference on System Sciences , 2018, pp. 5746–5755.

Open-source software to conduct online rating studies
G. Hirschfeld, H. Bien, M. de Vries, H. Lüttmann, J. Schwall, Behavior Research Methods 42 (2010) 542–546.