| article html file updated | 8 February 2020 23:44 CET | Update | https://www.mdpi.com/2304-6767/5/4/34 |
| article html file updated | 29 September 2019 03:07 CEST | Update | - |
| article html file updated | 2 May 2019 09:20 CEST | Update | - |
| article html file updated | 18 April 2019 07:03 CEST | Update | - |
| article html file updated | 11 December 2017 12:01 CET | Original file | - |
| article xml uploaded. | 11 December 2017 12:00 CET | Original file | https://www.mdpi.com/2304-6767/5/4/34/xml |
| article pdf uploaded. | 11 December 2017 12:00 CET | Version of Record | https://www.mdpi.com/2304-6767/5/4/34/pdf |
