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Type of paper by year published.
| 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | Total | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Empirical research | 1 | 1 | 2 | 1 | 2 | 2 | 3 | 2 | 2 | 5 | 1 | 3 | 7 | 32 | ||||||||
| Abstracts from conferences | 1 | 2 | 1 | 1 | 2 | 3 | 10 | |||||||||||||||
| Editorials | 1 | 1 | 2 | 1 | 1 | 6 | ||||||||||||||||
| Point-of-view papers | 1 | 1 | 2 | 1 | 1 | 6 | ||||||||||||||||
| Systematic reviews/reviews | 1 | 1 | 3 | 5 | ||||||||||||||||||
| Essays | 1 | 1 | 2 | |||||||||||||||||||
| Posters | 1 | 1 | 1 | 3 | ||||||||||||||||||
| Commentaries | 1 | 1 | 2 | |||||||||||||||||||
| Theoretical papers | 1 | 1 | ||||||||||||||||||||
| Case study | 1 | 1 | ||||||||||||||||||||
| Total | 2 | 0 | 1 | 3 | 0 | 2 | 1 | 2 | 1 | 2 | 3 | 2 | 0 | 1 | 3 | 4 | 5 | 8 | 6 | 9 | 13 | 68 |
