This map shows the geographic impact of E Hartmann'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 E Hartmann with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites E Hartmann more than expected).
This network shows the impact of papers produced by E Hartmann. 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 E Hartmann. The network helps show where E Hartmann may publish in the future.
Co-authorship network of co-authors of E Hartmann
This figure shows the co-authorship network connecting the top 25 collaborators of E Hartmann.
A scholar is included among the top collaborators of E Hartmann 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 E Hartmann. E Hartmann is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Hartmann, E, et al.. (1980). Treatment of sinusitis and otitis media with pivampicillin.. PubMed. 2(7). 469–74.3 indexed citations
6.
Hartmann, E, et al.. (1979). Frequent nightmares and the vulnerability to schizophrenia: the personality of the nightmare sufferer.. PubMed. 15(1). 10–2.15 indexed citations
7.
Hartmann, E, et al.. (1979). The psychological effects of dopamine-beta-hydroxylase inhibition in normal subjects.. PubMed. 14(3). 455–62.8 indexed citations
8.
Hartmann, E. (1978). Drugs against insomnia. Der Internist. 19(9). 552–556.1 indexed citations
Landgraf, Rainer, J. Hess, & E Hartmann. (1977). [Effect of oxytocin on regional 3H-orotic acid uptake in rat brain].. PubMed. 70(1). 45–52.10 indexed citations
11.
Hartmann, E. (1976). Discussion of 'The changing use of dreams in psychoanalytic practice: The dream as a 'royal road' to the biology of the mental apparatus.. Munich Personal RePEc Archive (Ludwig Maximilian University of Munich). 57(3). 331–4.5 indexed citations
Hartmann, E. (1972). How to help your patients sleep better.. PubMed. 100(3). 126 passim–126 passim.2 indexed citations
14.
Hartmann, E. (1970). What sleep is good sleep?. PubMed. 7(2). 59–69.5 indexed citations
15.
Baekeland, Frederick & E Hartmann. (1970). Sleep requirements and the characteristics of some sleepers.. PubMed. 7(2). 33–43.5 indexed citations
16.
Hartmann, E. (1970). The D-state and norepinephrine-dependent systems.. PubMed. 7(2). 308–28.31 indexed citations
17.
Hartmann, E. (1969). The biochemistry and pharmacology of the D-state (dreaming sleep).. PubMed. 27(1-2). 105–20.6 indexed citations
18.
Hartmann, E. (1969). Pharmacological studies of sleep and dreaming: chemical and clinical relationships.. PubMed. 1(3). 243–58.35 indexed citations
19.
Hartmann, E, et al.. (1962). [Grave visual complications of surgery of eyelid pouches].. PubMed. 195. 142–8.2 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.