| article html file updated | 7 February 2020 18:31 CET | Update | https://www.mdpi.com/1999-4893/9/4/81 |
| article html file updated | 22 September 2019 06:36 CEST | Update | - |
| article html file updated | 4 May 2019 21:33 CEST | Update | - |
| article html file updated | 28 December 2016 05:29 CET | Update | - |
| article html file updated | 19 December 2016 10:22 CET | Update | - |
| article xml uploaded. | 19 December 2016 10:21 CET | Update | https://www.mdpi.com/1999-4893/9/4/81/xml |
| article pdf uploaded. | 19 December 2016 10:21 CET | Updated version of record | https://www.mdpi.com/1999-4893/9/4/81/pdf |
| article html file updated | 24 November 2016 04:51 CET | Original file | - |
| article xml uploaded. | 24 November 2016 04:50 CET | Update | - |
| article xml uploaded. | 24 November 2016 04:50 CET | Original file | - |
| article pdf uploaded. | 24 November 2016 04:50 CET | Version of Record | https://www.mdpi.com/1999-4893/9/4/81/pdf-vor |
