| article html file updated | 8 February 2020 23:41 CET | Update | https://www.mdpi.com/2073-8994/9/12/311 |
| article html file updated | 29 September 2019 02:51 CEST | Update | - |
| article html file updated | 2 May 2019 09:27 CEST | Update | - |
| article html file updated | 18 April 2019 07:10 CEST | Update | - |
| article html file updated | 2 January 2018 17:39 CET | Update | - |
| article html file updated | 10 December 2017 11:47 CET | Original file | - |
| article xml uploaded. | 10 December 2017 11:46 CET | Original file | https://www.mdpi.com/2073-8994/9/12/311/xml |
| article pdf uploaded. | 10 December 2017 11:46 CET | Version of Record | https://www.mdpi.com/2073-8994/9/12/311/pdf |
