| article html file updated | 7 February 2020 21:25 CET | Update | https://www.mdpi.com/2073-4360/9/1/28 |
| article html file updated | 22 September 2019 21:05 CEST | Update | - |
| article html file updated | 4 May 2019 15:25 CEST | Update | - |
| article html file updated | 18 March 2019 06:01 CET | Update | - |
| article html file updated | 7 February 2017 10:31 CET | Update | - |
| article html file updated | 13 January 2017 11:47 CET | Original file | - |
| article xml uploaded. | 13 January 2017 11:45 CET | Update | https://www.mdpi.com/2073-4360/9/1/28/xml |
| article xml uploaded. | 13 January 2017 11:45 CET | Original file | - |
| article pdf uploaded. | 13 January 2017 11:45 CET | Version of Record | https://www.mdpi.com/2073-4360/9/1/28/pdf |
