| article html file updated | 6 February 2020 07:39 CET | Update | https://www.mdpi.com/2077-1444/5/1/321 |
| article html file updated | 7 May 2019 17:51 CEST | Update | - |
| article html file updated | 21 March 2019 13:17 CET | Update | - |
| article html file updated | 19 August 2015 22:18 CEST | Update | - |
| article html file updated | 14 August 2014 12:04 CEST | Update | - |
| article xml file uploaded | 14 August 2014 12:04 CEST | Update | https://www.mdpi.com/2077-1444/5/1/321/xml |
| article html file updated | 15 May 2014 16:26 CEST | Original file | - |
| article pdf uploaded. | 3 March 2014 16:50 CET | Version of Record | https://www.mdpi.com/2077-1444/5/1/321/pdf |
