| article html file updated | 9 February 2020 13:31 CET | Update | https://www.mdpi.com/1996-1073/11/4/903 |
| article html file updated | 2 October 2019 13:03 CEST | Update | - |
| article html file updated | 1 May 2019 04:05 CEST | Update | - |
| article html file updated | 17 April 2019 04:25 CEST | Update | - |
| article html file updated | 29 March 2019 14:59 CET | Update | - |
| article html file updated | 1 May 2018 09:26 CEST | Update | - |
| article html file updated | 12 April 2018 14:25 CEST | Original file | - |
| article xml uploaded. | 12 April 2018 14:23 CEST | Original file | https://www.mdpi.com/1996-1073/11/4/903/xml |
| article pdf uploaded. | 12 April 2018 14:23 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/4/903/pdf |
