| article html file updated | 7 February 2020 11:11 CET | Update | https://www.mdpi.com/1424-8247/9/3/38 |
| article html file updated | 5 May 2019 11:04 CEST | Update | - |
| article html file updated | 27 March 2019 09:19 CET | Update | - |
| article html file updated | 9 November 2017 12:30 CET | Update | - |
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| article html file updated | 28 September 2016 11:56 CEST | Update | - |
| article html file updated | 4 July 2016 10:28 CEST | Original file | - |
| article xml uploaded. | 4 July 2016 10:27 CEST | Original file | https://www.mdpi.com/1424-8247/9/3/38/xml |
| article pdf uploaded. | 4 July 2016 10:27 CEST | Version of Record | https://www.mdpi.com/1424-8247/9/3/38/pdf |
