| article html file updated | 8 February 2020 19:54 CET | Update | https://www.mdpi.com/2075-4450/8/4/117 |
| article html file updated | 28 September 2019 03:05 CEST | Update | - |
| article html file updated | 2 May 2019 17:57 CEST | Update | - |
| article html file updated | 2 January 2018 12:42 CET | Update | - |
| article html file updated | 31 October 2017 03:38 CET | Original file | - |
| article xml uploaded. | 31 October 2017 03:36 CET | Original file | https://www.mdpi.com/2075-4450/8/4/117/xml |
| article pdf uploaded. | 31 October 2017 03:36 CET | Version of Record | https://www.mdpi.com/2075-4450/8/4/117/pdf |
