| article html file updated | 9 February 2020 00:18 CET | Update | https://www.mdpi.com/2073-4360/9/12/721 |
| article html file updated | 29 September 2019 06:33 CEST | Update | - |
| article html file updated | 2 May 2019 08:05 CEST | Update | - |
| article html file updated | 18 April 2019 05:53 CEST | Update | - |
| article html file updated | 2 January 2018 15:14 CET | Update | - |
| article html file updated | 16 December 2017 11:56 CET | Original file | - |
| article xml uploaded. | 16 December 2017 11:55 CET | Update | https://www.mdpi.com/2073-4360/9/12/721/xml |
| article xml uploaded. | 16 December 2017 11:55 CET | Original file | - |
| article pdf uploaded. | 16 December 2017 11:55 CET | Version of Record | https://www.mdpi.com/2073-4360/9/12/721/pdf |
