| article html file updated | 6 February 2020 12:07 CET | Update | https://www.mdpi.com/1999-4893/7/3/456 |
| article html file updated | 20 September 2019 12:45 CEST | Update | - |
| article html file updated | 22 March 2019 00:36 CET | Update | - |
| article html file updated | 14 February 2017 11:15 CET | Original file | - |
| article pdf uploaded. | 11 September 2014 15:41 CEST | Updated version of record | https://www.mdpi.com/1999-4893/7/3/456/pdf |
| article pdf uploaded. | 10 September 2014 14:59 CEST | Version of Record | https://www.mdpi.com/1999-4893/7/3/456/pdf-vor |
