| article html file updated | 7 February 2020 03:55 CET | Update | https://www.mdpi.com/1660-3397/14/2/26 |
| article html file updated | 6 May 2019 01:40 CEST | Update | - |
| article html file updated | 26 March 2019 19:25 CET | Original file | - |
| article pdf uploaded. | 26 January 2016 11:59 CET | Version of Record | https://www.mdpi.com/1660-3397/14/2/26/pdf |
| article xml uploaded. | 26 January 2016 11:59 CET | Original file | https://www.mdpi.com/1660-3397/14/2/26/xml |
