| article html file updated | 8 February 2020 07:16 CET | Update | https://www.mdpi.com/2073-4344/7/6/174 |
| article html file updated | 25 September 2019 03:11 CEST | Update | - |
| article html file updated | 3 May 2019 19:22 CEST | Update | - |
| article html file updated | 27 June 2017 09:59 CEST | Update | - |
| article html file updated | 23 June 2017 04:41 CEST | Original file | - |
| article xml uploaded. | 23 June 2017 04:39 CEST | Update | https://www.mdpi.com/2073-4344/7/6/174/xml |
| article pdf uploaded. | 2 June 2017 10:18 CEST | Version of Record | https://www.mdpi.com/2073-4344/7/6/174/pdf |
