| article html file updated | 8 February 2020 10:10 CET | Update | https://www.mdpi.com/2079-9292/6/3/50 |
| article html file updated | 25 September 2019 18:29 CEST | Update | - |
| article html file updated | 3 May 2019 13:55 CEST | Update | - |
| article html file updated | 30 September 2017 07:52 CEST | Update | - |
| article html file updated | 7 July 2017 12:18 CEST | Original file | - |
| article xml uploaded. | 7 July 2017 12:17 CEST | Original file | https://www.mdpi.com/2079-9292/6/3/50/xml |
| article pdf uploaded. | 7 July 2017 12:17 CEST | Updated version of record | https://www.mdpi.com/2079-9292/6/3/50/pdf |
| article pdf uploaded. | 5 July 2017 15:04 CEST | Version of Record | https://www.mdpi.com/2079-9292/6/3/50/pdf-vor |
