| article html file updated | 6 February 2020 15:00 CET | Update | https://www.mdpi.com/2073-4425/6/1/22 |
| article html file updated | 7 May 2019 02:51 CEST | Update | - |
| article html file updated | 25 March 2019 20:10 CET | Update | - |
| article html file updated | 21 August 2015 05:25 CEST | Update | - |
| article html file updated | 30 March 2015 12:39 CEST | Update | - |
| article xml file uploaded | 30 March 2015 12:39 CEST | Update | https://www.mdpi.com/2073-4425/6/1/22/xml |
| article html file updated | 20 January 2015 08:37 CET | Original file | - |
| article xml file uploaded | 20 January 2015 08:37 CET | Original file | - |
| article pdf uploaded. | 7 January 2015 18:27 CET | Version of Record | https://www.mdpi.com/2073-4425/6/1/22/pdf |
