| article html file updated | 7 February 2020 04:46 CET | Update | https://www.mdpi.com/1660-3397/14/2/40 |
| article html file updated | 5 May 2019 23:51 CEST | Update | N/A |
| article html file updated | 26 March 2019 21:10 CET | Original file | N/A |
| article pdf uploaded. | 19 February 2016 13:51 CET | Version of Record | https://www.mdpi.com/1660-3397/14/2/40/pdf |
| article xml uploaded. | 19 February 2016 13:51 CET | Original file | https://www.mdpi.com/1660-3397/14/2/40/xml |
