The influence of search engine optimization on Google's results: : A multi-dimensional approach for detecting SEO. - Dirk Lewandowski; Sebastian Sünkler; Nurce Yagci (WebSci, 2021)

A Comparison of Source Distribution and Result Overlap in Web Search Engines. - Nurce Yagci; Sebastian Sünkler; Helena Häußler; Dirk Lewandowski (ASIST, 2022)

Query sampler: generating query sets for analyzing search engines using keyword research tools. - Sebastian Schultheiß; Dirk Lewandowski; Sonja von Mach; Nurce Yagci (PeerJ Comput. Sci., 2023)

Result Assessment Tool: Software to Support Studies Based on Data from Search Engines. - Sebastian Sünkler; Nurce Yagci; Sebastian Schultheiß; Sonja von Mach; Dirk Lewandowski (ECIR (5), 2024)

Result Assessment Tool (RAT): empowering search engine data analysis. - Sebastian Sünkler; Dirk Lewandowski; Sebastian Schultheiß; Nurce Yagci (PeerJ Comput. Sci., 2025)