| article html file updated | 7 February 2020 13:45 CET | Update | https://www.mdpi.com/2079-4991/6/9/156 |
| article html file updated | 5 May 2019 06:20 CEST | Update | N/A |
| article html file updated | 27 March 2019 14:30 CET | Update | N/A |
| article html file updated | 27 September 2016 06:30 CEST | Update | N/A |
| article html file updated | 23 August 2016 13:13 CEST | Original file | N/A |
| article xml uploaded. | 23 August 2016 13:11 CEST | Update | https://www.mdpi.com/2079-4991/6/9/156/xml |
| article xml uploaded. | 23 August 2016 13:11 CEST | Update | N/A |
| article xml uploaded. | 23 August 2016 13:11 CEST | Original file | N/A |
| article pdf uploaded. | 23 August 2016 13:11 CEST | Version of Record | https://www.mdpi.com/2079-4991/6/9/156/pdf |
