| article html file updated | 7 February 2020 23:30 CET | Update | https://www.mdpi.com/2073-4360/9/2/54 |
| article html file updated | 23 September 2019 08:35 CEST | Update | - |
| article html file updated | 4 May 2019 11:01 CEST | Update | - |
| article html file updated | 20 March 2019 06:35 CET | Update | - |
| article html file updated | 1 March 2017 11:13 CET | Update | - |
| article html file updated | 16 February 2017 07:30 CET | Original file | - |
| article xml uploaded. | 16 February 2017 07:29 CET | Update | https://www.mdpi.com/2073-4360/9/2/54/xml |
| article xml uploaded. | 16 February 2017 07:29 CET | Original file | - |
| article pdf uploaded. | 16 February 2017 07:29 CET | Version of Record | https://www.mdpi.com/2073-4360/9/2/54/pdf |
