| article html file updated | 7 February 2020 19:32 CET | Update | https://www.mdpi.com/2076-3425/6/4/58 |
| article html file updated | 22 September 2019 11:02 CEST | Update | - |
| article html file updated | 4 May 2019 19:25 CEST | Update | - |
| article html file updated | 27 December 2016 02:18 CET | Update | - |
| article html file updated | 13 December 2016 10:57 CET | Original file | - |
| article xml uploaded. | 13 December 2016 10:55 CET | Update | https://www.mdpi.com/2076-3425/6/4/58/xml |
| article xml uploaded. | 13 December 2016 10:55 CET | Original file | - |
| article pdf uploaded. | 13 December 2016 10:55 CET | Version of Record | https://www.mdpi.com/2076-3425/6/4/58/pdf |
