| article html file updated | 7 February 2020 17:27 CET | Update | https://www.mdpi.com/2076-3425/6/4/54 |
| article html file updated | 22 September 2019 04:39 CEST | Update | - |
| article html file updated | 4 May 2019 23:35 CEST | Update | - |
| article html file updated | 27 December 2016 02:18 CET | Update | - |
| article html file updated | 3 November 2016 10:33 CET | Original file | - |
| article xml uploaded. | 3 November 2016 10:31 CET | Update | https://www.mdpi.com/2076-3425/6/4/54/xml |
| article xml uploaded. | 3 November 2016 10:31 CET | Original file | - |
| article pdf uploaded. | 3 November 2016 10:31 CET | Version of Record | https://www.mdpi.com/2076-3425/6/4/54/pdf |
