| article html file updated | 9 February 2020 05:25 CET | Update | https://www.mdpi.com/1660-4601/15/2/257 |
| article html file updated | 30 September 2019 12:04 CEST | Update | - |
| article html file updated | 1 May 2019 21:13 CEST | Update | - |
| article html file updated | 17 April 2019 20:08 CEST | Update | - |
| article html file updated | 28 March 2019 20:40 CET | Update | - |
| article html file updated | 14 March 2018 17:39 CET | Update | - |
| article html file updated | 3 February 2018 10:03 CET | Original file | - |
| article xml uploaded. | 3 February 2018 10:02 CET | Original file | https://www.mdpi.com/1660-4601/15/2/257/xml |
| article pdf uploaded. | 3 February 2018 10:02 CET | Version of Record | https://www.mdpi.com/1660-4601/15/2/257/pdf |
