| article html file updated | 6 February 2020 23:18 CET | Update | https://www.mdpi.com/2073-8994/7/4/1734 |
| article html file updated | 6 May 2019 10:17 CEST | Update | - |
| article html file updated | 26 March 2019 11:42 CET | Update | - |
| article html file updated | 27 October 2015 12:01 CET | Original file | - |
| article xml file uploaded | 27 October 2015 12:01 CET | Original file | https://www.mdpi.com/2073-8994/7/4/1734/xml |
| article pdf uploaded. | 28 September 2015 14:38 CEST | Version of Record | https://www.mdpi.com/2073-8994/7/4/1734/pdf |
