| article html file updated | 7 February 2020 04:44 CET | Update | https://www.mdpi.com/1660-3397/14/2/41 |
| article html file updated | 5 May 2019 23:57 CEST | Update | - |
| article html file updated | 26 March 2019 21:04 CET | Original file | - |
| article pdf uploaded. | 19 February 2016 08:52 CET | Version of Record | https://www.mdpi.com/1660-3397/14/2/41/pdf |
| article xml uploaded. | 19 February 2016 08:52 CET | Original file | https://www.mdpi.com/1660-3397/14/2/41/xml |
