| article html file updated | 9 February 2020 00:04 CET | Update | https://www.mdpi.com/2071-1050/9/12/2331 |
| article html file updated | 2 May 2019 08:35 CEST | Update | N/A |
| article html file updated | 18 April 2019 06:21 CEST | Update | N/A |
| article html file updated | 2 January 2018 19:09 CET | Update | N/A |
| article html file updated | 14 December 2017 09:49 CET | Original file | N/A |
| article xml uploaded. | 14 December 2017 09:48 CET | Update | https://www.mdpi.com/2071-1050/9/12/2331/xml |
| article xml uploaded. | 14 December 2017 09:48 CET | Original file | N/A |
| article pdf uploaded. | 14 December 2017 09:48 CET | Version of Record | https://www.mdpi.com/2071-1050/9/12/2331/pdf |
