| article html file updated | 8 February 2020 20:26 CET | Update | https://www.mdpi.com/2312-7481/3/4/34 |
| article html file updated | 28 September 2019 06:29 CEST | Update | - |
| article html file updated | 2 May 2019 16:43 CEST | Update | - |
| article html file updated | 2 January 2018 14:23 CET | Update | - |
| article html file updated | 7 November 2017 14:19 CET | Original file | - |
| article xml uploaded. | 7 November 2017 14:18 CET | Original file | https://www.mdpi.com/2312-7481/3/4/34/xml |
| article pdf uploaded. | 7 November 2017 14:18 CET | Updated version of record | https://www.mdpi.com/2312-7481/3/4/34/pdf |
| article pdf uploaded. | 6 November 2017 11:00 CET | Version of Record | https://www.mdpi.com/2312-7481/3/4/34/pdf-vor |
