| article html file updated | 9 February 2020 02:48 CET | Update | https://www.mdpi.com/2077-1444/9/1/21 |
| article html file updated | 2 May 2019 02:46 CEST | Update | N/A |
| article html file updated | 18 April 2019 00:59 CEST | Update | N/A |
| article html file updated | 28 March 2019 14:57 CET | Update | N/A |
| article html file updated | 1 February 2018 07:46 CET | Update | N/A |
| article html file updated | 12 January 2018 07:39 CET | Original file | N/A |
| article xml uploaded. | 12 January 2018 07:37 CET | Original file | https://www.mdpi.com/2077-1444/9/1/21/xml |
| article pdf uploaded. | 12 January 2018 07:37 CET | Version of Record | https://www.mdpi.com/2077-1444/9/1/21/pdf |
