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| Year of publication | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | Total | |
| Number of articles | 3 | 8 | 3 | 8 | 3 | 9 | 4 | 1 | 39 |
