| article html file updated | 7 February 2020 21:24 CET | Update | https://www.mdpi.com/2077-1312/5/1/7 |
| article html file updated | 22 September 2019 21:00 CEST | Update | - |
| article html file updated | 4 May 2019 15:26 CEST | Update | - |
| article html file updated | 27 October 2017 10:55 CEST | Update | - |
| article html file updated | 13 January 2017 11:49 CET | Update | - |
| article html file updated | 13 January 2017 11:49 CET | Update | - |
| article html file updated | 13 January 2017 11:49 CET | Original file | - |
| article xml uploaded. | 13 January 2017 11:47 CET | Update | https://www.mdpi.com/2077-1312/5/1/7/xml |
| article xml uploaded. | 13 January 2017 11:47 CET | Original file | - |
| article pdf uploaded. | 13 January 2017 11:47 CET | Version of Record | https://www.mdpi.com/2077-1312/5/1/7/pdf |
