| article html file updated | 8 February 2020 21:11 CET | Update | https://www.mdpi.com/2079-6439/5/4/44 |
| article html file updated | 28 September 2019 11:29 CEST | Update | - |
| article html file updated | 2 May 2019 15:01 CEST | Update | - |
| article html file updated | 2 January 2018 11:33 CET | Update | - |
| article html file updated | 14 November 2017 13:21 CET | Original file | - |
| article xml uploaded. | 14 November 2017 13:20 CET | Update | https://www.mdpi.com/2079-6439/5/4/44/xml |
| article xml uploaded. | 14 November 2017 13:20 CET | Update | - |
| article xml uploaded. | 14 November 2017 13:20 CET | Original file | - |
| article pdf uploaded. | 14 November 2017 13:20 CET | Version of Record | https://www.mdpi.com/2079-6439/5/4/44/pdf |
