| article html file updated | 8 February 2020 08:16 CET | Update | https://www.mdpi.com/1996-1073/10/6/809 |
| article html file updated | 25 September 2019 08:21 CEST | Update | N/A |
| article html file updated | 3 May 2019 17:29 CEST | Update | N/A |
| article html file updated | 27 June 2017 10:21 CEST | Update | N/A |
| article html file updated | 14 June 2017 11:37 CEST | Original file | N/A |
| article xml uploaded. | 14 June 2017 11:36 CEST | Original file | https://www.mdpi.com/1996-1073/10/6/809/xml |
| article pdf uploaded. | 14 June 2017 11:36 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/6/809/pdf |
