| article html file updated | 7 February 2020 10:29 CET | Update | https://www.mdpi.com/1999-4893/9/2/41 |
| article html file updated | 5 May 2019 12:20 CEST | Update | - |
| article html file updated | 27 March 2019 08:03 CET | Update | - |
| article html file updated | 27 June 2016 12:19 CEST | Update | - |
| article html file updated | 21 June 2016 10:26 CEST | Original file | - |
| article xml uploaded. | 21 June 2016 10:24 CEST | Original file | https://www.mdpi.com/1999-4893/9/2/41/xml |
| article pdf uploaded. | 21 June 2016 10:24 CEST | Version of Record | https://www.mdpi.com/1999-4893/9/2/41/pdf |
