Patent Portfolio Analysis of Cities: Statistics and Maps of Technological Inventiveness. - Dieter Franz Kogler; Gaston Heimeriks; Loet Leydesdorff (CoRR, 2016)

Mapping patent classifications: portfolio and statistical analysis, and the comparison of strengths and weaknesses. - Loet Leydesdorff; Dieter Franz Kogler; Bowen Yan (Scientometrics, 2017)

Capturing information on technology convergence, international collaboration, and knowledge flow from patent documents: A case of information and communication technology. - Changjun Lee; Dieter Franz Kogler; Daeho Lee (Inf. Process. Manag., 2019)

Identifying the technological knowledge depreciation rate using patent citation data: a case study of the solar photovoltaic industry. - Jie Liu 053; Arnulf Grubler; Tieju Ma; Dieter Franz Kogler (Scientometrics, 2021)