| article html file updated | 7 February 2020 21:54 CET | Update | https://www.mdpi.com/2075-4701/7/1/28 |
| article html file updated | 22 September 2019 23:45 CEST | Update | - |
| article html file updated | 4 May 2019 14:15 CEST | Update | - |
| article html file updated | 7 February 2017 09:40 CET | Update | - |
| article html file updated | 20 January 2017 13:39 CET | Original file | - |
| article xml uploaded. | 20 January 2017 13:37 CET | Update | https://www.mdpi.com/2075-4701/7/1/28/xml |
| article xml uploaded. | 20 January 2017 13:37 CET | Original file | - |
| article pdf uploaded. | 20 January 2017 13:37 CET | Version of Record | https://www.mdpi.com/2075-4701/7/1/28/pdf |
