| article html file updated | 8 February 2020 18:18 CET | Update | https://www.mdpi.com/1911-8074/10/4/18 |
| article html file updated | 2 May 2019 21:38 CEST | Update | - |
| article html file updated | 2 January 2018 13:57 CET | Update | - |
| article html file updated | 16 October 2017 08:20 CEST | Update | - |
| article xml uploaded. | 16 October 2017 08:19 CEST | Update | https://www.mdpi.com/1911-8074/10/4/18/xml |
| article pdf uploaded. | 16 October 2017 08:19 CEST | Updated version of record | https://www.mdpi.com/1911-8074/10/4/18/pdf |
| article html file updated | 12 October 2017 17:28 CEST | Original file | - |
| article xml uploaded. | 12 October 2017 17:27 CEST | Original file | - |
| article pdf uploaded. | 12 October 2017 17:27 CEST | Version of Record | https://www.mdpi.com/1911-8074/10/4/18/pdf-vor |
