| article html file updated | 7 February 2020 14:13 CET | Update | https://www.mdpi.com/1996-1073/9/9/698 |
| article html file updated | 5 May 2019 05:30 CEST | Update | N/A |
| article html file updated | 27 March 2019 15:32 CET | Update | N/A |
| article html file updated | 26 September 2016 11:53 CEST | Update | N/A |
| article html file updated | 31 August 2016 12:28 CEST | Original file | N/A |
| article xml uploaded. | 31 August 2016 12:26 CEST | Update | https://www.mdpi.com/1996-1073/9/9/698/xml |
| article xml uploaded. | 31 August 2016 12:26 CEST | Original file | N/A |
| article pdf uploaded. | 31 August 2016 12:26 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/9/698/pdf |
