| article html file updated | 9 February 2020 00:37 CET | Update | https://www.mdpi.com/1999-4915/9/12/393 |
| article html file updated | 29 September 2019 08:23 CEST | Update | - |
| article html file updated | 2 May 2019 07:23 CEST | Update | - |
| article html file updated | 18 April 2019 05:15 CEST | Update | - |
| article html file updated | 2 January 2018 17:47 CET | Update | - |
| article html file updated | 20 December 2017 07:31 CET | Original file | - |
| article xml uploaded. | 20 December 2017 07:30 CET | Original file | https://www.mdpi.com/1999-4915/9/12/393/xml |
| article pdf uploaded. | 20 December 2017 07:30 CET | Version of Record | https://www.mdpi.com/1999-4915/9/12/393/pdf |
