| article html file updated | 9 February 2020 12:41 CET | Update | https://www.mdpi.com/2077-1312/6/2/34 |
| article html file updated | 2 October 2019 07:49 CEST | Update | - |
| article html file updated | 1 May 2019 05:46 CEST | Update | - |
| article html file updated | 17 April 2019 05:54 CEST | Update | - |
| article html file updated | 29 March 2019 13:05 CET | Update | - |
| article html file updated | 28 June 2018 08:58 CEST | Update | - |
| article html file updated | 5 April 2018 15:57 CEST | Original file | - |
| article xml uploaded. | 5 April 2018 15:56 CEST | Original file | https://www.mdpi.com/2077-1312/6/2/34/xml |
| article pdf uploaded. | 5 April 2018 15:56 CEST | Version of Record | https://www.mdpi.com/2077-1312/6/2/34/pdf |
