This map shows the geographic impact of Leif Sjögren'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 Leif Sjögren with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Leif Sjögren more than expected).
This network shows the impact of papers produced by Leif Sjögren. 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 Leif Sjögren. The network helps show where Leif Sjögren may publish in the future.
Co-authorship network of co-authors of Leif Sjögren
This figure shows the co-authorship network connecting the top 25 collaborators of Leif Sjögren.
A scholar is included among the top collaborators of Leif Sjögren 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 Leif Sjögren. Leif Sjögren is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Eriksson, Olle, et al.. (2018). New technology for road surface measurement : transverse profile and rut depth. KTH Publication Database DiVA (KTH Royal Institute of Technology).
3.
Nitsche, Philippe, et al.. (2014). Monitoring ride quality on roads with existing sensors in passenger cars. KTH Publication Database DiVA (KTH Royal Institute of Technology).1 indexed citations
4.
Sjögren, Leif, et al.. (2011). Jämnhetsmätning på cykelvägar: utveckling och test av metod för att bedöma cyklisters åkkvalitet baserat på cykelvägens längsprofil. VTI Rapport.2 indexed citations
5.
Gustafsson, Mats, et al.. (2011). Road user effect models : the influence of rut depth on traffic safety. KTH Publication Database DiVA (KTH Royal Institute of Technology).5 indexed citations
6.
Nilsson, Jan-Eric, et al.. (2006). Performance contracting. Summary of knowledge and recommendations for further research. KTH Publication Database DiVA (KTH Royal Institute of Technology).2 indexed citations
7.
Sjögren, Leif, et al.. (2005). Design an up to date rut depth monitoring profilometer, requirements and limitations. KTH Publication Database DiVA (KTH Royal Institute of Technology).3 indexed citations
8.
Sjögren, Leif. (2002). State of the art; Automatisk sprickmätning av vägbanor.1 indexed citations
9.
Sjögren, Leif, et al.. (2000). AUTOMATIC CRACK MEASUREMENT IN SWEDEN. 497–506.5 indexed citations
Sjögren, Leif, et al.. (1992). Monolithic millimeter-wave diode array beam controllers: Theory and experiment. NASA Technical Reports Server (NASA). 45–57.6 indexed citations
18.
Luhmann, Neville C., et al.. (1991). Millimeter-wave Monolithic Solid State Device Arrays. Softwaretechnik-Trends. 293.2 indexed citations
19.
Sjögren, Leif, et al.. (1991). The Laser RST : Current status. KTH Publication Database DiVA (KTH Royal Institute of Technology).8 indexed citations
20.
Luhmann, Neville C., Leif Sjögren, D.B. Rutledge, et al.. (1990). Watt-level Quasi-optical Monolithic Frequency Multiplier Development. Softwaretechnik-Trends. 126.1 indexed citations
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.