| article html file updated | 8 February 2020 14:07 CET | Update | https://www.mdpi.com/2304-8158/6/8/71 |
| article html file updated | 26 September 2019 16:19 CEST | Update | - |
| article html file updated | 3 May 2019 05:49 CEST | Update | - |
| article html file updated | 1 September 2017 08:27 CEST | Update | - |
| article html file updated | 22 August 2017 08:38 CEST | Original file | - |
| article xml uploaded. | 22 August 2017 08:37 CEST | Update | https://www.mdpi.com/2304-8158/6/8/71/xml |
| article xml uploaded. | 22 August 2017 08:37 CEST | Original file | - |
| article pdf uploaded. | 22 August 2017 08:37 CEST | Version of Record | https://www.mdpi.com/2304-8158/6/8/71/pdf |
