| article html file updated | 8 February 2020 07:35 CET | Update | https://www.mdpi.com/2079-4991/7/6/139 |
| article html file updated | 25 September 2019 04:53 CEST | Update | - |
| article html file updated | 3 May 2019 18:45 CEST | Update | - |
| article html file updated | 27 June 2017 11:07 CEST | Update | - |
| article html file updated | 6 June 2017 12:27 CEST | Original file | - |
| article xml uploaded. | 6 June 2017 12:26 CEST | Original file | https://www.mdpi.com/2079-4991/7/6/139/xml |
| article pdf uploaded. | 6 June 2017 12:26 CEST | Version of Record | https://www.mdpi.com/2079-4991/7/6/139/pdf |
