| article html file updated | 7 February 2020 22:06 CET | Update | https://www.mdpi.com/1660-3397/15/2/24 |
| article html file updated | 23 September 2019 00:54 CEST | Update | - |
| article html file updated | 4 May 2019 13:49 CEST | Update | - |
| article html file updated | 2 March 2017 09:36 CET | Update | - |
| article html file updated | 25 January 2017 04:33 CET | Original file | - |
| article xml uploaded. | 25 January 2017 04:31 CET | Original file | https://www.mdpi.com/1660-3397/15/2/24/xml |
| article pdf uploaded. | 25 January 2017 04:31 CET | Version of Record | https://www.mdpi.com/1660-3397/15/2/24/pdf |
