| article html file updated | 7 February 2020 21:10 CET | Update | https://www.mdpi.com/2073-4344/7/1/23 |
| article html file updated | 22 September 2019 19:52 CEST | Update | - |
| article html file updated | 4 May 2019 15:59 CEST | Update | - |
| article html file updated | 7 February 2017 04:07 CET | Update | - |
| article html file updated | 11 January 2017 10:45 CET | Update | - |
| article xml uploaded. | 11 January 2017 10:43 CET | Update | https://www.mdpi.com/2073-4344/7/1/23/xml |
| article xml uploaded. | 11 January 2017 10:43 CET | Update | - |
| article xml uploaded. | 11 January 2017 10:43 CET | Update | - |
| article pdf uploaded. | 11 January 2017 10:43 CET | Updated version of record | https://www.mdpi.com/2073-4344/7/1/23/pdf |
| article html file updated | 11 January 2017 03:56 CET | Original file | - |
| article xml uploaded. | 11 January 2017 03:54 CET | Update | - |
| article xml uploaded. | 11 January 2017 03:54 CET | Original file | - |
| article pdf uploaded. | 11 January 2017 03:54 CET | Version of Record | - |
