| article html file updated | 8 February 2020 22:31 CET | Update | https://www.mdpi.com/2073-4360/9/12/640 |
| article html file updated | 28 September 2019 19:58 CEST | Update | - |
| article html file updated | 2 May 2019 12:02 CEST | Update | - |
| article html file updated | 18 April 2019 09:39 CEST | Update | - |
| article html file updated | 2 January 2018 14:29 CET | Update | - |
| article html file updated | 29 November 2017 07:43 CET | Original file | - |
| article xml uploaded. | 29 November 2017 07:42 CET | Original file | https://www.mdpi.com/2073-4360/9/12/640/xml |
| article pdf uploaded. | 29 November 2017 07:42 CET | Version of Record | https://www.mdpi.com/2073-4360/9/12/640/pdf |
