Johannes Claßen

1.1k total citations
57 papers, 771 citations indexed

About

Johannes Claßen is a scholar working on Atomic and Molecular Physics, and Optics, Automotive Engineering and Materials Chemistry. According to data from OpenAlex, Johannes Claßen has authored 57 papers receiving a total of 771 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Atomic and Molecular Physics, and Optics, 17 papers in Automotive Engineering and 11 papers in Materials Chemistry. Recurrent topics in Johannes Claßen's work include Vehicle emissions and performance (15 papers), Quantum, superfluid, helium dynamics (14 papers) and Advanced Combustion Engine Technologies (8 papers). Johannes Claßen is often cited by papers focused on Vehicle emissions and performance (15 papers), Quantum, superfluid, helium dynamics (14 papers) and Advanced Combustion Engine Technologies (8 papers). Johannes Claßen collaborates with scholars based in Germany, United States and Netherlands. Johannes Claßen's co-authors include Stefan Pischinger, Siegfried Hunklinger, C. Enss, Humphrey J. Maris, Stefan Sterlepper, G. Weiß, Martin Nijs, Till Burkert, Johann Hauer and Clemens Bechinger and has published in prestigious journals such as Physical Review Letters, SHILAP Revista de lepidopterología and Physical review. B, Condensed matter.

In The Last Decade

Johannes Claßen

50 papers receiving 734 citations

Peers

Johannes Claßen

AMPO

EEE

Cameron J. Dasch United States

Robert Johansson Sweden

J. N. Koster United States

A. Hertzberg United States

Duncan A. Lockerby United Kingdom

Robert V. Tompson United States

Henry Helvajian United States

Ellen Meeks United States

M.B. Long United States

V. Galindo Germany

Cameron J. Dasch United States

Johannes Claßen

109 ×0.3

AMPO

92 ×0.4

EEE

120 ×0.7

142 ×0.8

178 ×1.3

Citations per year, relative to Johannes Claßen Johannes Claßen (= 1×) peers Cameron J. Dasch

Countries citing papers authored by Johannes Claßen

Since Specialization

Citations

This map shows the geographic impact of Johannes Claßen's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Johannes Claßen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Johannes Claßen more than expected).

Fields of papers citing papers by Johannes Claßen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Johannes Claßen. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Johannes Claßen. The network helps show where Johannes Claßen may publish in the future.

Co-authorship network of co-authors of Johannes Claßen

This figure shows the co-authorship network connecting the top 25 collaborators of Johannes Claßen. A scholar is included among the top collaborators of Johannes Claßen based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Johannes Claßen. Johannes Claßen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Sterlepper, Stefan, et al.. (2025). The Role of Hydrogen in Exhaust Gas Aftertreatment Systems of Hydrogen Combustion Engines. SAE technical papers on CD-ROM/SAE technical paper series. 1. 1 indexed citations

Pischinger, Stefan, et al.. (2024). Applying Density-Based Clustering for the Analysis of Emission Events in Real Driving Emissions Calibration. SHILAP Revista de lepidopterología. 4(1). 46–66. 2 indexed citations

Claßen, Johannes, et al.. (2023). RDE Calibration—Evaluating Fundamentals of Clustering Approaches to Support the Calibration Process. SHILAP Revista de lepidopterología. 5(2). 404–423. 3 indexed citations

Claßen, Johannes, et al.. (2021). Modelling of Gasoline Engine-Out Emissions Using Artificial Neural Networks. 2 indexed citations

Claßen, Johannes, et al.. (2021). Hardware-in-the-Loop Based Virtual Emission Calibration for a Gasoline Engine. SAE technical papers on CD-ROM/SAE technical paper series. 1. 12 indexed citations

Sterlepper, Stefan, et al.. (2020). Gasoline Particulate Filter Characterization Focusing on the Filtration Efficiency of Nano-Particulates Down to 10 nm. SAE technical papers on CD-ROM/SAE technical paper series. 1. 19 indexed citations

Claßen, Johannes, et al.. (2020). Statistically supported real driving emission calibration: Using cycle generation to provide vehicle-specific and statistically representative test scenarios for Euro 7. International Journal of Engine Research. 21(10). 1783–1799. 32 indexed citations

Sterlepper, Stefan, Johannes Claßen, Stefan Pischinger, et al.. (2019). Analysis of the Emission Conversion Performance of Gasoline Particulate Filters Over Lifetime. SAE International Journal of Advances and Current Practices in Mobility. 2(2). 710–720. 10 indexed citations

Sterlepper, Stefan, et al.. (2019). Design of a Novel Gasoline Particulate Filter Aging Method. Emission Control Science and Technology. 6(2). 151–162. 5 indexed citations

10.

Scharf, Johannes, Johannes Claßen, Martin Nijs, et al.. (2017). Current and future trends of gasoline particulate filter technologies, calibration strategies and aging methods. RWTH Publications (RWTH Aachen). 10 indexed citations

11.

Hehr, Thomas, Wilfried Budach, Ulf Lamprecht, et al.. (2003). Experimental thermoradiotherapy in malignant hepatocellular carcinoma. International Journal of Radiation Oncology*Biology*Physics. 55(5). 1374–1380. 4 indexed citations

12.

Hehr, Thomas, Ulf Lamprecht, Johannes Claßen, et al.. (2001). Thermoradiotherapy for locally recurrent breast cancer with skin involvement. International Journal of Hyperthermia. 17(4). 291–301. 28 indexed citations

13.

Claßen, Johannes, C. Enss, & Siegfried Hunklinger. (2001). Comment on “Low Temperature Acoustic Properties of Amorphous Silica and the Tunneling Model”. Physical Review Letters. 86(11). 2480–2480. 6 indexed citations

14.

Meier, J., Gero Wittich, Johannes Claßen, & Siegfried Hunklinger. (2001). Desorption Behavior of Quench-Condensed Argon-Neon Mixtures. Physical Review Letters. 88(1). 16104–16104. 3 indexed citations

15.

Claßen, Johannes, Till Burkert, C. Enss, & Siegfried Hunklinger. (2000). Anomalous Frequency Dependence of the Internal Friction of Vitreous Silica. Physical Review Letters. 84(10). 2176–2179. 48 indexed citations

16.

Claßen, Johannes, et al.. (1997). GliosarcomaCase Report and Review of the Literature. Acta Oncologica. 36(7). 771–774. 8 indexed citations

17.

Weiß, G., et al.. (1997). Elastic low temperature anomalies of solid hydrogen crystallites. Journal of Low Temperature Physics. 109(1-2). 163–181. 3 indexed citations

18.

Weiß, G., et al.. (1997). Elastic Low Temperature Anomalies of Solid Hydrogen Crystallites. Journal of Low Temperature Physics. 109(1-2). 163–181. 2 indexed citations

19.

Claßen, Johannes, et al.. (1996). Anomalous elastic properties of quench-condensed hydrogen films. Czechoslovak Journal of Physics. 46(S1). 527–528. 2 indexed citations

20.

Claßen, Johannes, et al.. (1981). Telescopes for the Record. Sky and Telescope. 61. 303.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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