The European Rotorcraft Forum (ERF) is one of the premier events in the rotorcraft community’s calendar, bringing together manufacturers, research centres, academia,operators and regulatory agencies to discuss advances in research, development, design, manufacturing, testing and operation of rotorcraft.
This Forum will be the 41st in a series of meetings, which take place annually across Europe, rotating around the United Kingdom, Germany, France, Italy, the Netherlands and Russia. The first ERF was held in Southampton, England, in 1975, and the most recent again in Southampton in 2014. Join the conversation about this journal
SJR
The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from
It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.
Year
SJR
2016
0.304
2017
0.150
2018
0.190
2019
0.120
Total Documents
Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.
Year
Documents
2016
195
2017
0
2018
0
2019
0
Citations per document
This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.
Cites per document
Year
Value
Cites / Doc. (4 years)
2016
1.042
Cites / Doc. (4 years)
2017
0.385
Cites / Doc. (4 years)
2018
0.398
Cites / Doc. (4 years)
2019
0.341
Cites / Doc. (3 years)
2016
1.042
Cites / Doc. (3 years)
2017
0.385
Cites / Doc. (3 years)
2018
0.398
Cites / Doc. (3 years)
2019
0.262
Cites / Doc. (2 years)
2016
1.042
Cites / Doc. (2 years)
2017
0.385
Cites / Doc. (2 years)
2018
0.318
Cites / Doc. (2 years)
2019
0.000
Total Cites Self-Cites
Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.
Cites
Year
Value
Self Cites
2016
57
Self Cites
2017
0
Self Cites
2018
0
Self Cites
2019
0
Total Cites
2016
124
Total Cites
2017
121
Total Cites
2018
125
Total Cites
2019
51
External Cites per Doc Cites per Doc
Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years.
External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.
Cites
Year
Value
External Cites per document
2016
0.563
External Cites per document
2017
0.385
External Cites per document
2018
0.398
External Cites per document
2019
0.262
Cites per document
2016
1.042
Cites per document
2017
0.385
Cites per document
2018
0.398
Cites per document
2019
0.262
% International Collaboration
International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.
Year
International Collaboration
2016
21.54
2017
0
2018
0
2019
0
Citable documents Non-citable documents
Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.
Documents
Year
Value
Non-citable documents
2016
4
Non-citable documents
2017
6
Non-citable documents
2018
6
Non-citable documents
2019
2
Citable documents
2016
115
Citable documents
2017
308
Citable documents
2018
308
Citable documents
2019
193
Cited documents Uncited documents
Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.
Documents
Year
Value
Uncited documents
2016
71
Uncited documents
2017
241
Uncited documents
2018
251
Uncited documents
2019
163
Cited documents
2016
48
Cited documents
2017
73
Cited documents
2018
63
Cited documents
2019
32
% Female Authors
Evolution of the percentage of female authors.
Year
Female Percent
2016
9.67
2017
0.00
2018
0.00
2019
0.00
Documents cited by public policy (Overton)
Evolution of the number of documents cited by public policy documents according to Overton database.
Documents
Year
Value
Overton
2016
0
Overton
2017
0
Overton
2018
0
Overton
2019
0
Documents related to SDGs (UN)
Evolution of the number of documents related to Sustainable Development Goals defined by United Nations. Available from 2018 onwards.
Documents
Year
Value
SDG
2018
0
SDG
2019
0
Estimated APC
It estimates the article processing charges (APCs) a journal might charge, based on its visibility, prestige, and impact as measured by the SJR. It does not reflect the actual APC, but rather a calculated approximation based on journal quality.
Year
Est. APC (USD)
2016
2673
2017
2533
2018
2507
2019
2453
Estimated financial value
It represents the potential financial worth of a journal. It is obtained by multiplying the journal's Estimated APC by the total number of citable documents published over the past five years. This value reflects the hypothetical revenue a journal could generate based on its estimated publication costs and scholarly output.
Year
Est. value (USD)
2016
521214
2017
493885
2018
488823
2019
478406
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