| article html file updated | 8 February 2020 06:46 CET | Update | https://www.mdpi.com/2073-4352/7/6/157 |
| article html file updated | 25 September 2019 00:41 CEST | Update | - |
| article html file updated | 3 May 2019 20:18 CEST | Update | - |
| article html file updated | 30 June 2017 11:23 CEST | Update | - |
| article html file updated | 26 May 2017 13:57 CEST | Original file | - |
| article xml uploaded. | 26 May 2017 13:55 CEST | Update | https://www.mdpi.com/2073-4352/7/6/157/xml |
| article pdf uploaded. | 26 May 2017 13:55 CEST | Version of Record | https://www.mdpi.com/2073-4352/7/6/157/pdf |
