| article html file updated | 6 February 2020 20:27 CET | Update | https://www.mdpi.com/2227-9091/3/3/234 |
| article html file updated | 20 September 2019 23:55 CEST | Update | - |
| article html file updated | 6 May 2019 16:12 CEST | Update | - |
| article html file updated | 26 March 2019 06:10 CET | Update | - |
| article html file updated | 22 October 2015 10:24 CEST | Update | - |
| article xml file uploaded | 22 October 2015 10:24 CEST | Update | https://www.mdpi.com/2227-9091/3/3/234/xml |
| article html file updated | 3 September 2015 10:17 CEST | Original file | - |
| article xml file uploaded | 3 September 2015 10:17 CEST | Original file | - |
| article pdf uploaded. | 8 July 2015 14:57 CEST | Version of Record | https://www.mdpi.com/2227-9091/3/3/234/pdf |
