| article html file updated | 6 February 2020 11:53 CET | Update | https://www.mdpi.com/2218-273X/4/3/812 |
| article html file updated | 20 September 2019 12:16 CEST | Update | - |
| article html file updated | 22 March 2019 00:02 CET | Update | - |
| article html file updated | 14 March 2018 13:30 CET | Update | - |
| article html file updated | 20 August 2015 16:55 CEST | Update | - |
| article html file updated | 11 October 2014 03:50 CEST | Original file | - |
| article xml file uploaded | 11 October 2014 03:50 CEST | Original file | https://www.mdpi.com/2218-273X/4/3/812/xml |
| article pdf uploaded. | 29 August 2014 10:23 CEST | Version of Record | https://www.mdpi.com/2218-273X/4/3/812/pdf |
