| article html file updated | 8 February 2020 02:53 CET | Update | https://www.mdpi.com/2077-0383/6/4/43 |
| article html file updated | 24 September 2019 03:53 CEST | Update | - |
| article html file updated | 4 May 2019 03:38 CEST | Update | - |
| article html file updated | 28 April 2017 06:48 CEST | Update | - |
| article html file updated | 5 April 2017 09:15 CEST | Update | - |
| article xml uploaded. | 5 April 2017 09:13 CEST | Update | https://www.mdpi.com/2077-0383/6/4/43/xml |
| article pdf uploaded. | 5 April 2017 09:13 CEST | Updated version of record | https://www.mdpi.com/2077-0383/6/4/43/pdf |
| article html file updated | 4 April 2017 12:15 CEST | Original file | - |
| article pdf uploaded. | 4 April 2017 12:13 CEST | Version of Record | https://www.mdpi.com/2077-0383/6/4/43/pdf-vor |
