| article html file updated | 6 February 2020 00:36 CET | Update | https://www.mdpi.com/2071-1050/5/2/774 |
| article html file updated | 19 September 2019 18:02 CEST | Update | - |
| article html file updated | 8 May 2019 08:18 CEST | Update | - |
| article html file updated | 20 March 2019 18:45 CET | Update | - |
| article html file updated | 17 June 2015 06:40 CEST | Update | - |
| article html file updated | 22 February 2013 16:06 CET | Original file | - |
| article xml uploaded. | 22 February 2013 16:06 CET | Original file | https://www.mdpi.com/2071-1050/5/2/774/xml |
| article pdf uploaded. | 21 February 2013 09:31 CET | Updated version of record | https://www.mdpi.com/2071-1050/5/2/774/pdf |
| article pdf uploaded. | 19 February 2013 11:16 CET | Version of Record | https://www.mdpi.com/2071-1050/5/2/774/pdf-vor |
