| article html file updated | 9 February 2020 04:22 CET | Update | https://www.mdpi.com/2297-8747/23/1/6 |
| article html file updated | 1 May 2019 23:30 CEST | Update | N/A |
| article html file updated | 17 April 2019 22:05 CEST | Update | N/A |
| article html file updated | 28 March 2019 18:24 CET | Update | N/A |
| article html file updated | 25 January 2018 17:26 CET | Original file | N/A |
| article xml uploaded. | 25 January 2018 17:24 CET | Update | https://www.mdpi.com/2297-8747/23/1/6/xml |
| article xml uploaded. | 25 January 2018 17:24 CET | Update | N/A |
| article xml uploaded. | 25 January 2018 17:24 CET | Original file | N/A |
| article pdf uploaded. | 25 January 2018 17:24 CET | Version of Record | https://www.mdpi.com/2297-8747/23/1/6/pdf |
