| article html file updated | 8 February 2020 15:19 CET | Update | https://www.mdpi.com/2304-8158/6/9/74 |
| article html file updated | 26 September 2019 22:49 CEST | Update | - |
| article html file updated | 3 May 2019 03:35 CEST | Update | - |
| article html file updated | 30 September 2017 10:18 CEST | Update | - |
| article html file updated | 5 September 2017 09:41 CEST | Original file | - |
| article xml uploaded. | 5 September 2017 09:40 CEST | Update | https://www.mdpi.com/2304-8158/6/9/74/xml |
| article xml uploaded. | 5 September 2017 09:40 CEST | Original file | - |
| article pdf uploaded. | 5 September 2017 09:39 CEST | Version of Record | https://www.mdpi.com/2304-8158/6/9/74/pdf |
