| article html file updated | 8 February 2020 22:22 CET | Update | https://www.mdpi.com/2077-1312/5/4/55 |
| article html file updated | 28 September 2019 19:01 CEST | Update | - |
| article html file updated | 2 May 2019 12:23 CEST | Update | - |
| article html file updated | 18 April 2019 10:00 CEST | Update | - |
| article html file updated | 2 January 2018 12:53 CET | Update | - |
| article html file updated | 27 November 2017 11:42 CET | Original file | - |
| article xml uploaded. | 27 November 2017 11:40 CET | Update | https://www.mdpi.com/2077-1312/5/4/55/xml |
| article xml uploaded. | 27 November 2017 11:40 CET | Original file | - |
| article pdf uploaded. | 27 November 2017 11:40 CET | Version of Record | https://www.mdpi.com/2077-1312/5/4/55/pdf |
