| article html file updated | 8 February 2020 18:35 CET | Update | https://www.mdpi.com/2075-4434/5/4/66 |
| article html file updated | 27 September 2019 19:11 CEST | Update | - |
| article html file updated | 2 May 2019 21:00 CEST | Update | - |
| article html file updated | 2 January 2018 17:11 CET | Update | - |
| article html file updated | 16 October 2017 16:36 CEST | Original file | - |
| article xml uploaded. | 16 October 2017 16:35 CEST | Original file | https://www.mdpi.com/2075-4434/5/4/66/xml |
| article pdf uploaded. | 16 October 2017 16:35 CEST | Version of Record | https://www.mdpi.com/2075-4434/5/4/66/pdf |
