| article html file updated | 7 February 2020 16:20 CET | Update | https://www.mdpi.com/2075-4450/7/4/55 |
| article html file updated | 22 September 2019 02:51 CEST | Update | - |
| article html file updated | 5 May 2019 01:41 CEST | Update | - |
| article html file updated | 29 December 2016 04:31 CET | Update | - |
| article html file updated | 14 October 2016 09:00 CEST | Original file | - |
| article xml uploaded. | 14 October 2016 08:59 CEST | Update | https://www.mdpi.com/2075-4450/7/4/55/xml |
| article xml uploaded. | 14 October 2016 08:59 CEST | Original file | - |
| article pdf uploaded. | 14 October 2016 08:59 CEST | Version of Record | https://www.mdpi.com/2075-4450/7/4/55/pdf |
