| article html file updated | 9 February 2020 13:37 CET | Update | https://www.mdpi.com/2077-1312/6/2/40 |
| article html file updated | 2 October 2019 13:42 CEST | Update | - |
| article html file updated | 1 May 2019 03:54 CEST | Update | - |
| article html file updated | 17 April 2019 04:15 CEST | Update | - |
| article html file updated | 29 March 2019 15:12 CET | Update | - |
| article html file updated | 28 June 2018 09:01 CEST | Update | - |
| article html file updated | 12 April 2018 17:31 CEST | Original file | - |
| article xml uploaded. | 12 April 2018 17:29 CEST | Update | https://www.mdpi.com/2077-1312/6/2/40/xml |
| article pdf uploaded. | 12 April 2018 17:22 CEST | Version of Record | https://www.mdpi.com/2077-1312/6/2/40/pdf |
