| article html file updated | 7 February 2020 20:56 CET | Update | https://www.mdpi.com/2073-4352/7/1/9 |
| article html file updated | 22 September 2019 18:44 CEST | Update | - |
| article html file updated | 4 May 2019 16:28 CEST | Update | - |
| article html file updated | 7 February 2017 04:06 CET | Update | - |
| article html file updated | 23 January 2017 10:13 CET | Update | - |
| article xml uploaded. | 23 January 2017 10:13 CET | Update | https://www.mdpi.com/2073-4352/7/1/9/xml |
| article xml uploaded. | 23 January 2017 10:13 CET | Update | - |
| article xml uploaded. | 23 January 2017 10:13 CET | Update | - |
| article xml uploaded. | 23 January 2017 10:10 CET | Update | - |
| article xml uploaded. | 23 January 2017 10:10 CET | Update | - |
| article xml uploaded. | 23 January 2017 10:10 CET | Update | - |
| article xml uploaded. | 23 January 2017 10:10 CET | Update | - |
| article pdf uploaded. | 23 January 2017 09:57 CET | Updated version of record | https://www.mdpi.com/2073-4352/7/1/9/pdf |
| article html file updated | 6 January 2017 12:12 CET | Original file | - |
| article pdf uploaded. | 6 January 2017 11:46 CET | Version of Record | https://www.mdpi.com/2073-4352/7/1/9/pdf-vor |
