| article html file updated | 7 February 2020 21:59 CET | Update | https://www.mdpi.com/2297-8747/22/1/12 |
| article html file updated | 23 September 2019 00:15 CEST | Update | - |
| article html file updated | 4 May 2019 14:03 CEST | Update | - |
| article html file updated | 22 January 2017 10:58 CET | Original file | - |
| article xml uploaded. | 22 January 2017 10:56 CET | Original file | https://www.mdpi.com/2297-8747/22/1/12/xml |
| article pdf uploaded. | 22 January 2017 10:56 CET | Version of Record | https://www.mdpi.com/2297-8747/22/1/12/pdf |
