| article html file updated | 7 February 2020 21:04 CET | Update | https://www.mdpi.com/1996-1073/10/1/71 |
| article html file updated | 22 September 2019 19:29 CEST | Update | - |
| article html file updated | 4 May 2019 16:11 CEST | Update | - |
| article html file updated | 7 February 2017 09:52 CET | Update | - |
| article html file updated | 9 January 2017 13:32 CET | Original file | - |
| article xml uploaded. | 9 January 2017 13:31 CET | Update | https://www.mdpi.com/1996-1073/10/1/71/xml |
| article pdf uploaded. | 9 January 2017 13:31 CET | Version of Record | https://www.mdpi.com/1996-1073/10/1/71/pdf |
