| article html file updated | 8 February 2020 19:40 CET | Update | https://www.mdpi.com/1996-1073/10/11/1721 |
| article html file updated | 28 September 2019 01:40 CEST | Update | N/A |
| article html file updated | 2 May 2019 18:28 CEST | Update | N/A |
| article html file updated | 30 November 2017 10:50 CET | Update | N/A |
| article html file updated | 27 October 2017 16:22 CEST | Original file | N/A |
| article xml uploaded. | 27 October 2017 16:20 CEST | Update | https://www.mdpi.com/1996-1073/10/11/1721/xml |
| article xml uploaded. | 27 October 2017 16:20 CEST | Update | N/A |
| article xml uploaded. | 27 October 2017 16:20 CEST | Original file | N/A |
| article pdf uploaded. | 27 October 2017 16:20 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/11/1721/pdf |
