| article html file updated | 7 February 2020 18:18 CET | Update | https://www.mdpi.com/2079-6412/6/4/64 |
| article html file updated | 22 September 2019 06:10 CEST | Update | - |
| article html file updated | 4 May 2019 21:57 CEST | Update | - |
| article html file updated | 28 December 2016 08:36 CET | Update | - |
| article html file updated | 19 November 2016 10:22 CET | Original file | - |
| article xml uploaded. | 19 November 2016 10:21 CET | Update | https://www.mdpi.com/2079-6412/6/4/64/xml |
| article xml uploaded. | 19 November 2016 10:21 CET | Original file | - |
| article pdf uploaded. | 19 November 2016 10:21 CET | Version of Record | https://www.mdpi.com/2079-6412/6/4/64/pdf |
