| article html file updated | 8 February 2020 02:51 CET | Update | https://www.mdpi.com/1999-4915/9/4/71 |
| article html file updated | 24 September 2019 03:42 CEST | Update | - |
| article html file updated | 4 May 2019 03:43 CEST | Update | - |
| article html file updated | 29 April 2017 05:52 CEST | Update | - |
| article html file updated | 7 April 2017 12:40 CEST | Original file | - |
| article xml uploaded. | 7 April 2017 12:39 CEST | Original file | https://www.mdpi.com/1999-4915/9/4/71/xml |
| article pdf uploaded. | 7 April 2017 12:39 CEST | Updated version of record | https://www.mdpi.com/1999-4915/9/4/71/pdf |
| article pdf uploaded. | 3 April 2017 12:37 CEST | Version of Record | https://www.mdpi.com/1999-4915/9/4/71/pdf-vor |
