| article html file updated | 7 February 2020 06:55 CET | Update | https://www.mdpi.com/2079-4991/6/4/62 |
| article html file updated | 5 May 2019 19:23 CEST | Update | - |
| article html file updated | 27 March 2019 01:13 CET | Update | - |
| article html file updated | 29 June 2017 13:29 CEST | Update | - |
| article html file updated | 24 February 2017 10:25 CET | Update | - |
| article html file updated | 29 April 2016 06:12 CEST | Update | - |
| article html file updated | 7 April 2016 08:11 CEST | Original file | - |
| article xml uploaded. | 7 April 2016 08:10 CEST | Original file | https://www.mdpi.com/2079-4991/6/4/62/xml |
| article pdf uploaded. | 7 April 2016 08:10 CEST | Version of Record | https://www.mdpi.com/2079-4991/6/4/62/pdf |
