| article html file updated | 9 February 2020 04:48 CET | Update | https://www.mdpi.com/2077-1444/9/2/39 |
| article html file updated | 1 May 2019 22:35 CEST | Update | N/A |
| article html file updated | 17 April 2019 21:15 CEST | Update | N/A |
| article html file updated | 28 March 2019 19:22 CET | Update | N/A |
| article html file updated | 14 March 2018 15:13 CET | Update | N/A |
| article html file updated | 30 January 2018 06:58 CET | Original file | N/A |
| article xml uploaded. | 30 January 2018 06:57 CET | Original file | https://www.mdpi.com/2077-1444/9/2/39/xml |
| article pdf uploaded. | 30 January 2018 06:57 CET | Version of Record | https://www.mdpi.com/2077-1444/9/2/39/pdf |
