| article html file updated | 8 February 2020 17:46 CET | Update | https://www.mdpi.com/2075-4434/5/4/61 |
| article html file updated | 27 September 2019 13:07 CEST | Update | - |
| article html file updated | 2 May 2019 22:47 CEST | Update | - |
| article html file updated | 2 January 2018 17:11 CET | Update | - |
| article html file updated | 9 October 2017 09:32 CEST | Original file | - |
| article xml uploaded. | 9 October 2017 09:30 CEST | Original file | https://www.mdpi.com/2075-4434/5/4/61/xml |
| article pdf uploaded. | 9 October 2017 09:30 CEST | Updated version of record | https://www.mdpi.com/2075-4434/5/4/61/pdf |
| article pdf uploaded. | 4 October 2017 09:15 CEST | Version of Record | - |
