| article html file updated | 7 February 2020 12:14 CET | Update | https://www.mdpi.com/1996-1073/9/8/574 |
| article html file updated | 5 May 2019 09:11 CEST | Update | N/A |
| article html file updated | 27 March 2019 11:17 CET | Update | N/A |
| article html file updated | 25 August 2016 11:19 CEST | Update | N/A |
| article html file updated | 25 July 2016 07:48 CEST | Original file | N/A |
| article xml uploaded. | 25 July 2016 07:46 CEST | Original file | https://www.mdpi.com/1996-1073/9/8/574/xml |
| article pdf uploaded. | 25 July 2016 07:46 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/8/574/pdf |
