| article html file updated | 6 February 2020 04:14 CET | Update | https://www.mdpi.com/2072-666X/4/3/333 |
| article html file updated | 8 May 2019 00:46 CEST | Update | - |
| article html file updated | 21 March 2019 04:13 CET | Update | - |
| article html file updated | 17 June 2015 13:00 CEST | Original file | - |
| article pdf uploaded. | 9 September 2013 16:17 CEST | Updated version of record | https://www.mdpi.com/2072-666X/4/3/333/pdf |
| article pdf uploaded. | 6 September 2013 14:15 CEST | Version of Record | https://www.mdpi.com/2072-666X/4/3/333/pdf-vor |
