| article html file updated | 7 February 2020 20:55 CET | Update | https://www.mdpi.com/1660-3397/15/1/12 |
| article html file updated | 22 September 2019 18:36 CEST | Update | - |
| article html file updated | 4 May 2019 16:30 CEST | Update | - |
| article html file updated | 7 February 2017 13:36 CET | Update | - |
| article html file updated | 6 January 2017 12:48 CET | Original file | - |
| article xml uploaded. | 6 January 2017 12:47 CET | Original file | https://www.mdpi.com/1660-3397/15/1/12/xml |
| article pdf uploaded. | 6 January 2017 12:47 CET | Version of Record | https://www.mdpi.com/1660-3397/15/1/12/pdf |
