| article html file updated | 7 February 2020 17:21 CET | Update | https://www.mdpi.com/1996-1073/9/11/903 |
| article html file updated | 4 May 2019 23:46 CEST | Update | N/A |
| article html file updated | 30 November 2016 05:42 CET | Update | N/A |
| article html file updated | 2 November 2016 09:01 CET | Original file | N/A |
| article xml uploaded. | 2 November 2016 09:00 CET | Update | https://www.mdpi.com/1996-1073/9/11/903/xml |
| article xml uploaded. | 2 November 2016 09:00 CET | Original file | N/A |
| article pdf uploaded. | 2 November 2016 09:00 CET | Version of Record | https://www.mdpi.com/1996-1073/9/11/903/pdf |
